See rarefaction in All languages combined, or Wiktionary
{
"antonyms": [
{
"word": "compression"
}
],
"etymology_templates": [
{
"args": {
"1": "en",
"2": "frm",
"3": "raréfaction"
},
"expansion": "Middle French raréfaction",
"name": "uder"
},
{
"args": {
"1": "en",
"2": "rarefy",
"3": "-faction"
},
"expansion": "By surface analysis, rarefy + -faction",
"name": "surf"
}
],
"etymology_text": "From Middle French raréfaction. By surface analysis, rarefy + -faction.",
"forms": [
{
"form": "rarefactions",
"tags": [
"plural"
]
}
],
"head_templates": [
{
"args": {
"1": "~"
},
"expansion": "rarefaction (countable and uncountable, plural rarefactions)",
"name": "en-noun"
}
],
"lang": "English",
"lang_code": "en",
"pos": "noun",
"senses": [
{
"categories": [
{
"kind": "other",
"name": "English entries with incorrect language header",
"parents": [],
"source": "w"
},
{
"kind": "other",
"name": "English terms suffixed with -faction",
"parents": [],
"source": "w"
},
{
"kind": "other",
"name": "English undefined derivations",
"parents": [],
"source": "w"
},
{
"kind": "other",
"name": "Entries with translation boxes",
"parents": [],
"source": "w"
},
{
"kind": "other",
"name": "Mandarin terms with redundant transliterations",
"parents": [],
"source": "w"
},
{
"kind": "other",
"name": "Pages with 1 entry",
"parents": [],
"source": "w"
},
{
"kind": "other",
"name": "Pages with entries",
"parents": [],
"source": "w"
},
{
"kind": "other",
"name": "Terms with Bengali translations",
"parents": [],
"source": "w"
},
{
"kind": "other",
"name": "Terms with Bulgarian translations",
"parents": [],
"source": "w"
},
{
"kind": "other",
"name": "Terms with Catalan translations",
"parents": [],
"source": "w"
},
{
"kind": "other",
"name": "Terms with Finnish translations",
"parents": [],
"source": "w"
},
{
"kind": "other",
"name": "Terms with Macedonian translations",
"parents": [],
"source": "w"
},
{
"kind": "other",
"name": "Terms with Mandarin translations",
"parents": [],
"source": "w"
},
{
"kind": "other",
"name": "Terms with Polish translations",
"parents": [],
"source": "w"
},
{
"kind": "other",
"name": "Terms with Portuguese translations",
"parents": [],
"source": "w"
},
{
"kind": "other",
"name": "Terms with Russian translations",
"parents": [],
"source": "w"
},
{
"kind": "other",
"name": "Terms with Spanish translations",
"parents": [],
"source": "w"
},
{
"kind": "other",
"name": "Terms with Turkish translations",
"parents": [],
"source": "w"
}
],
"derived": [
{
"word": "rarefactional"
}
],
"examples": [
{
"bold_text_offsets": [
[
119,
130
]
],
"ref": "1663, Robert Boyle, “Title I. Experiments Touching Bodies Capable of Freezing Others.”, in New Experiments and Observations Touching Cold, or, An Experimental History of Cold, Begun. […], London: […] Richard Davis, […], published 1683, →OCLC, paragraph 21, page 52:",
"text": "[T]his ſeal'd vial, being broken under water, ſuck'd in a conſiderable quantity of it, whether, becauſe of ſome little rarefaction of the Air included in the ſealing, or becauſe of the infrigidation of that Air by the ſnow, or for both theſe Reaſons, or any other, I ſhall not Now diſpute.",
"type": "quotation"
},
{
"bold_text_offsets": [
[
83,
94
]
],
"ref": "1847, editorial staff, “White Hard Spirit of Wine Varnish”, in Scientific American, series 1, Volume 3, Issue 9, page 72:",
"text": "..; but be particular to keep a firm hold over the cork of the bottle, or else the rarefaction will blow the cork out with the force of a shot: and an accident might acrue from fire.",
"type": "quotation"
}
],
"glosses": [
"A reduction in the density of a material, especially that of a fluid."
],
"id": "en-rarefaction-en-noun-uiuDWHIL",
"links": [
[
"reduction",
"reduction"
],
[
"density",
"density"
],
[
"fluid",
"fluid"
]
],
"related": [
{
"word": "rarefact"
}
],
"tags": [
"countable",
"uncountable"
],
"translations": [
{
"code": "bn",
"lang": "Bengali",
"lang_code": "bn",
"roman": "tonukron",
"sense": "reduction in the density of a material",
"word": "তনুকরণ"
},
{
"code": "bn",
"lang": "Bengali",
"lang_code": "bn",
"roman": "tonubhobon",
"sense": "reduction in the density of a material",
"word": "তনুভবন"
},
{
"code": "bg",
"lang": "Bulgarian",
"lang_code": "bg",
"roman": "razreždane",
"sense": "reduction in the density of a material",
"tags": [
"neuter"
],
"word": "разреждане"
},
{
"code": "ca",
"lang": "Catalan",
"lang_code": "ca",
"sense": "reduction in the density of a material",
"tags": [
"masculine"
],
"word": "enrariment"
},
{
"code": "ca",
"lang": "Catalan",
"lang_code": "ca",
"sense": "reduction in the density of a material",
"tags": [
"feminine"
],
"word": "rarefacció"
},
{
"code": "cmn",
"lang": "Chinese Mandarin",
"lang_code": "cmn",
"roman": "xīshū",
"sense": "reduction in the density of a material",
"word": "稀疏"
},
{
"code": "cmn",
"lang": "Chinese Mandarin",
"lang_code": "cmn",
"note": "in medicine",
"roman": "shūsōng",
"sense": "reduction in the density of a material",
"word": "疏鬆 /疏松"
},
{
"code": "fi",
"lang": "Finnish",
"lang_code": "fi",
"sense": "reduction in the density of a material",
"word": "harventaminen"
},
{
"code": "fi",
"lang": "Finnish",
"lang_code": "fi",
"sense": "reduction in the density of a material",
"word": "ohentaminen"
},
{
"code": "fi",
"lang": "Finnish",
"lang_code": "fi",
"sense": "reduction in the density of a material",
"word": "harventuminen"
},
{
"code": "fi",
"lang": "Finnish",
"lang_code": "fi",
"sense": "reduction in the density of a material",
"word": "ohentuminen"
},
{
"code": "mk",
"lang": "Macedonian",
"lang_code": "mk",
"roman": "proretčuvanje",
"sense": "reduction in the density of a material",
"tags": [
"neuter"
],
"word": "проретчување"
},
{
"code": "pl",
"lang": "Polish",
"lang_code": "pl",
"sense": "reduction in the density of a material",
"tags": [
"neuter"
],
"word": "rozrzedzenie"
},
{
"code": "pl",
"lang": "Polish",
"lang_code": "pl",
"sense": "reduction in the density of a material",
"tags": [
"neuter"
],
"word": "rozcieńczenie"
},
{
"code": "pt",
"lang": "Portuguese",
"lang_code": "pt",
"sense": "reduction in the density of a material",
"tags": [
"feminine"
],
"word": "rarefação"
},
{
"code": "ru",
"lang": "Russian",
"lang_code": "ru",
"roman": "razrežénije",
"sense": "reduction in the density of a material",
"word": "разреже́ние"
},
{
"code": "es",
"lang": "Spanish",
"lang_code": "es",
"sense": "reduction in the density of a material",
"tags": [
"feminine"
],
"word": "rarefacción"
},
{
"code": "es",
"lang": "Spanish",
"lang_code": "es",
"sense": "reduction in the density of a material",
"tags": [
"masculine"
],
"word": "enrarecimiento"
},
{
"code": "tr",
"lang": "Turkish",
"lang_code": "tr",
"sense": "reduction in the density of a material",
"word": "seyrelme"
},
{
"code": "tr",
"lang": "Turkish",
"lang_code": "tr",
"sense": "reduction in the density of a material",
"word": "seyrekleşme"
}
]
}
],
"word": "rarefaction"
}
{
"antonyms": [
{
"word": "compression"
}
],
"derived": [
{
"word": "rarefactional"
}
],
"etymology_templates": [
{
"args": {
"1": "en",
"2": "frm",
"3": "raréfaction"
},
"expansion": "Middle French raréfaction",
"name": "uder"
},
{
"args": {
"1": "en",
"2": "rarefy",
"3": "-faction"
},
"expansion": "By surface analysis, rarefy + -faction",
"name": "surf"
}
],
"etymology_text": "From Middle French raréfaction. By surface analysis, rarefy + -faction.",
"forms": [
{
"form": "rarefactions",
"tags": [
"plural"
]
}
],
"head_templates": [
{
"args": {
"1": "~"
},
"expansion": "rarefaction (countable and uncountable, plural rarefactions)",
"name": "en-noun"
}
],
"lang": "English",
"lang_code": "en",
"pos": "noun",
"related": [
{
"word": "rarefact"
}
],
"senses": [
{
"categories": [
"English countable nouns",
"English entries with incorrect language header",
"English lemmas",
"English nouns",
"English terms derived from Middle French",
"English terms suffixed with -faction",
"English terms with quotations",
"English uncountable nouns",
"English undefined derivations",
"Entries with translation boxes",
"Mandarin terms with redundant transliterations",
"Pages with 1 entry",
"Pages with entries",
"Terms with Bengali translations",
"Terms with Bulgarian translations",
"Terms with Catalan translations",
"Terms with Finnish translations",
"Terms with Macedonian translations",
"Terms with Mandarin translations",
"Terms with Polish translations",
"Terms with Portuguese translations",
"Terms with Russian translations",
"Terms with Spanish translations",
"Terms with Turkish translations"
],
"examples": [
{
"bold_text_offsets": [
[
119,
130
]
],
"ref": "1663, Robert Boyle, “Title I. Experiments Touching Bodies Capable of Freezing Others.”, in New Experiments and Observations Touching Cold, or, An Experimental History of Cold, Begun. […], London: […] Richard Davis, […], published 1683, →OCLC, paragraph 21, page 52:",
"text": "[T]his ſeal'd vial, being broken under water, ſuck'd in a conſiderable quantity of it, whether, becauſe of ſome little rarefaction of the Air included in the ſealing, or becauſe of the infrigidation of that Air by the ſnow, or for both theſe Reaſons, or any other, I ſhall not Now diſpute.",
"type": "quotation"
},
{
"bold_text_offsets": [
[
83,
94
]
],
"ref": "1847, editorial staff, “White Hard Spirit of Wine Varnish”, in Scientific American, series 1, Volume 3, Issue 9, page 72:",
"text": "..; but be particular to keep a firm hold over the cork of the bottle, or else the rarefaction will blow the cork out with the force of a shot: and an accident might acrue from fire.",
"type": "quotation"
}
],
"glosses": [
"A reduction in the density of a material, especially that of a fluid."
],
"links": [
[
"reduction",
"reduction"
],
[
"density",
"density"
],
[
"fluid",
"fluid"
]
],
"tags": [
"countable",
"uncountable"
]
}
],
"translations": [
{
"code": "bn",
"lang": "Bengali",
"lang_code": "bn",
"roman": "tonukron",
"sense": "reduction in the density of a material",
"word": "তনুকরণ"
},
{
"code": "bn",
"lang": "Bengali",
"lang_code": "bn",
"roman": "tonubhobon",
"sense": "reduction in the density of a material",
"word": "তনুভবন"
},
{
"code": "bg",
"lang": "Bulgarian",
"lang_code": "bg",
"roman": "razreždane",
"sense": "reduction in the density of a material",
"tags": [
"neuter"
],
"word": "разреждане"
},
{
"code": "ca",
"lang": "Catalan",
"lang_code": "ca",
"sense": "reduction in the density of a material",
"tags": [
"masculine"
],
"word": "enrariment"
},
{
"code": "ca",
"lang": "Catalan",
"lang_code": "ca",
"sense": "reduction in the density of a material",
"tags": [
"feminine"
],
"word": "rarefacció"
},
{
"code": "cmn",
"lang": "Chinese Mandarin",
"lang_code": "cmn",
"roman": "xīshū",
"sense": "reduction in the density of a material",
"word": "稀疏"
},
{
"code": "cmn",
"lang": "Chinese Mandarin",
"lang_code": "cmn",
"note": "in medicine",
"roman": "shūsōng",
"sense": "reduction in the density of a material",
"word": "疏鬆 /疏松"
},
{
"code": "fi",
"lang": "Finnish",
"lang_code": "fi",
"sense": "reduction in the density of a material",
"word": "harventaminen"
},
{
"code": "fi",
"lang": "Finnish",
"lang_code": "fi",
"sense": "reduction in the density of a material",
"word": "ohentaminen"
},
{
"code": "fi",
"lang": "Finnish",
"lang_code": "fi",
"sense": "reduction in the density of a material",
"word": "harventuminen"
},
{
"code": "fi",
"lang": "Finnish",
"lang_code": "fi",
"sense": "reduction in the density of a material",
"word": "ohentuminen"
},
{
"code": "mk",
"lang": "Macedonian",
"lang_code": "mk",
"roman": "proretčuvanje",
"sense": "reduction in the density of a material",
"tags": [
"neuter"
],
"word": "проретчување"
},
{
"code": "pl",
"lang": "Polish",
"lang_code": "pl",
"sense": "reduction in the density of a material",
"tags": [
"neuter"
],
"word": "rozrzedzenie"
},
{
"code": "pl",
"lang": "Polish",
"lang_code": "pl",
"sense": "reduction in the density of a material",
"tags": [
"neuter"
],
"word": "rozcieńczenie"
},
{
"code": "pt",
"lang": "Portuguese",
"lang_code": "pt",
"sense": "reduction in the density of a material",
"tags": [
"feminine"
],
"word": "rarefação"
},
{
"code": "ru",
"lang": "Russian",
"lang_code": "ru",
"roman": "razrežénije",
"sense": "reduction in the density of a material",
"word": "разреже́ние"
},
{
"code": "es",
"lang": "Spanish",
"lang_code": "es",
"sense": "reduction in the density of a material",
"tags": [
"feminine"
],
"word": "rarefacción"
},
{
"code": "es",
"lang": "Spanish",
"lang_code": "es",
"sense": "reduction in the density of a material",
"tags": [
"masculine"
],
"word": "enrarecimiento"
},
{
"code": "tr",
"lang": "Turkish",
"lang_code": "tr",
"sense": "reduction in the density of a material",
"word": "seyrelme"
},
{
"code": "tr",
"lang": "Turkish",
"lang_code": "tr",
"sense": "reduction in the density of a material",
"word": "seyrekleşme"
}
],
"word": "rarefaction"
}
Download raw JSONL data for rarefaction meaning in English (5.8kB)
This page is a part of the kaikki.org machine-readable English dictionary. This dictionary is based on structured data extracted on 2026-09-16 from the enwiktionary dump dated 2026-09-02 using wiktextract (d6fca27 and 65e1673). The data shown on this site has been post-processed and various details (e.g., extra categories) removed, some information disambiguated, and additional data merged from other sources. See the raw data download page for the unprocessed wiktextract data.
If you use this data in academic research, please cite Tatu Ylonen: Wiktextract: Wiktionary as Machine-Readable Structured Data, Proceedings of the 13th Conference on Language Resources and Evaluation (LREC), pp. 1317-1325, Marseille, 20-25 June 2022. Linking to the relevant page(s) under https://kaikki.org would also be greatly appreciated.