See lookback time in All languages combined, or Wiktionary
Download JSON data for lookback time meaning in English (1.4kB)
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"glosses": [
"The amount of time elapsed between the moment that light is detected on Earth and the moment it was originally emitted by the source."
],
"id": "en-lookback_time-en-noun-YZVgSMHD",
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"raw_glosses": [
"(astronomy, cosmology) The amount of time elapsed between the moment that light is detected on Earth and the moment it was originally emitted by the source."
],
"topics": [
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"The amount of time elapsed between the moment that light is detected on Earth and the moment it was originally emitted by the source."
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"(astronomy, cosmology) The amount of time elapsed between the moment that light is detected on Earth and the moment it was originally emitted by the source."
],
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"word": "lookback time"
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This page is a part of the kaikki.org machine-readable English dictionary. This dictionary is based on structured data extracted on 2024-05-01 from the enwiktionary dump dated 2024-04-21 using wiktextract (f4fd8c9 and c9440ce). 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.