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日本語WordNet(英和)
alga
名詞
Wiktionary英語版
出典：Wiktionary
alga
出典:『Wiktionary』 (2026/04/07 20:05 UTC 版)
名詞
alga (plural algae or (archaic) algæ)
- (biology) Any of many aquatic photosynthetic organisms, including the seaweeds, whose size ranges from a single cell to giant kelps and whose biochemistry and forms are very diverse, some being eukaryotic.
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2016 January 21, “Choose Your Weaponry: Selective Storage of a Single Toxic Compound, Latrunculin A, by Closely Related Nudibranch Molluscs”, in PLOS ONE, :
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For example, the antitumour depsipeptide kahalalide F was isolated from the opisthobranch mollusc Elysia rufescens, and is used by both the mollusc and its dietary alga Bryopsis spp.
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使用する際の注意点
- Algaes is a non-standard plural.
下位語
- (photosynthetic aquatic organism): seaweed; green alga (Chlorophyta and Charophyta) and red alga (Rhodophyta and Glaucophyta) in Plantae); brown alga (Phaeophyceae) and yellow-green algae (Xanthophyceae), Haptophyta, and Cryptomonada in Chromista), and blue-green alga (Cyanobacteria)
- microalga
- golden alga
- ice alga
- snow alga
派生語
- algacidal
- algaculture
- algin
- algist
- algoid
- golden-brown alga
- macroalga
- picoalga
語源
Of unknown origin, though probably a foreign substrate loanword related to ulva (“various grass-like or rush-like aquatic plants”). Note also similar dubiously-related forms in Baltic and Germanic with connotations of filth and dirtiness, including Lithuanian el̃mės, almens (“ichor, sanies”), (dialectal) Norwegian ul (“moldy”), olga (“to loathe”), elgja (“to fell like vomiting”), ulma (“to get moldy”), Middle Low German olm, ulm (“rottenness (esp. of wood)”), and Dutch uilig (“moldy (of wood)”). These terms have been tentatively linked to a Proto-Indo-European *alg-, *alǵ- (“to be dirty, be slimy; frog; duckweed”); other similar forms include dialectal Norwegian alka (“to dirty, soil”), Norwegian ulk (“frog, slime”), Low German ulk (“frog”). That said, it is possible that the Baltic and Germanic are not related to the Latin, or that all the terms derive from the same substrate.
発音
- (Classical Latin) IPA: [ˈaɫ.ɡa]
- (modern Italianate Ecclesiastical) IPA: [ˈal.ɡa]
名詞
alga f (genitive algae); first declension
- seaweed; plants that grow in freshwater
- (figuratively) something of little worth
語形変化
First-declension noun.
| singular | plural | |
|---|---|---|
| nominative | alga | algae |
| genitive | algae | algārum |
| dative | algae | algīs |
| accusative | algam | algās |
| ablative | algā | algīs |
| vocative | alga | algae |
派生語
- algensis
- algōsus
派生した語
参照
- ^ De Vaan, Michiel (2008), “alga”, in Etymological Dictionary of Latin and the other Italic Languages (Leiden Indo-European Etymological Dictionary Series; 7), Leiden, Boston: Brill, →ISBN, page 33
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