"microtoroid" meaning in English

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      "expansion": "Etymology tree\nProto-Indo-European *mey-der.?\nAncient Greek μικρός (mikrós)der.\nEnglish micro-\nEnglish toroid\nEnglish microtoroid\n[Appendix:Glossary#derived_terms|Derived]] from\", \"terms\" : [ { \"id\" : \"small\", \"children\" : [ { \"keyword_abbrev\" : \"der.\", \"keyword_label\" : \"Derived from\", \"terms\" : [ { \"is_uncertain\" : true, \"id\" : \"little\", \"children\" : [ ], \"status\" : \"ok\", \"lang_name\" : \"Proto-Indo-European\", \"term\" : \"*mey-\", \"lang\" : \"ine-pro\" } ], \"keyword\" : \"derived\" } ], \"status\" : \"ok\", \"lang_name\" : \"Ancient Greek\", \"term\" : \"μικρός\", \"lang\" : \"grc\" } ], \"keyword\" : \"derived\" } ], \"lang_name\" : \"English\", \"term\" : \"micro-\", \"status\" : \"ok\", \"lang\" : \"en\" }, { \"children\" : [ ], \"lang_name\" : \"English\", \"term\" : \"toroid\", \"status\" : \"missing\", \"lang\" : \"en\" } ], \"keyword_label\" : \"From\", \"is_group\" : true, \"keyword\" : \"affix\" } ], \"lang_name\" : \"English\", \"term\" : \"microtoroid\", \"status\" : \"ok\", \"lang\" : \"en\" }\" data-lang=\"en\" data-title=\"microtoroid\">\nFrom micro- + toroid.",
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  "etymology_text": "Etymology tree\nProto-Indo-European *mey-der.?\nAncient Greek μικρός (mikrós)der.\nEnglish micro-\nEnglish toroid\nEnglish microtoroid\nFrom micro- + toroid.",
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        "Any of an array of small ring-shaped structures, normally on the surface of a semiconductor substrate, that function as resonators in photonic devices."
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        "(physics) Any of an array of small ring-shaped structures, normally on the surface of a semiconductor substrate, that function as resonators in photonic devices."
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