出典:Wiktionary
出典:『Wiktionary』 (2026/02/12 18:06 UTC 版)
umbra (plural umbras or umbrae or (obsolete) umbræ)
Generally connected with Lithuanian unksna (“shade”), from Proto-Indo-European *wnksrā-. This term is tentatively derived from Proto-Indo-European *(H)wenk- (“to bend”); however, the semantic leaps required to go from "bend" to "shade" are large and unlikely.
Alternatively, if from Old Latin *omra, possibly from a Proto-Indo-European *h₂mr-u-, *h₂mrup-; related to Ancient Greek ἀμαυρός (amaurós, “dark”), Luwian 𒈠𒅈𒉿𒄿𒀀 (“rot”), and 𒈠𒊒𒉿𒄿 (“rotten”) (also see Hittite Maraššantiya, their name for the Kızılırmak River), and this Indo-European source is said to be a possible borrowing from a Semitic root *ḥ-m-r (“be red”), compare Arabic ح م ر (ḥ m r).
umbra f (genitive umbrae); first declension
First-declension noun.
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