出典:Wiktionary
出典:『Wiktionary』 (2026/04/07 23:22 UTC 版)
From 古期英語 ǣt, from Proto-West Germanic *āt, from Proto-Germanic *ētą. The final vowel is presumably generalised from the dative.
出典:『Wiktionary』 (2026/02/05 01:37 UTC 版)
IUPAC Commission of Nomenclature for Heterocyclic Compounds (1957)
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