出典:Wiktionary
From -tropism (suffix meaning ‘growth towards; movement, turning’)[1][2] (possibly based on geotropism かつ heliotropism),[3] from Latin tropus + English -ism (suffix forming nouns of action, process, または result). Tropus is derived from Ancient Greek τρόπος (trópos, “a turn; a manner, style, way; figure of speech, trope; etc.”),[4][5] from τρέπω (trépō, “to turn; to divert; to rotate または change orientation”) (from Proto-Indo-European *trep- (“to turn”)) + -ος (-os, suffix forming nouns of result または abstract nouns of action).
Sense 1 (“turning of an organism または part of an organism towards または away from a stimulus”) is modelled after German Tropismus.[1]
tropism (countable かつ uncountable, 複数形 tropisms)
出典:Wikipedia
出典:『Wikipedia』 (2011/08/02 18:41 UTC 版)
A tropism (from Greek τροπή, trope, "a turning") is a biological phenomenon, indicating growth or turning movement of a biological organism, usually a plant, in response to an environmental stimulus. In tropisms, this response is dependent on the direction of the stimulus (as opposed to nastic movements which are non-directional responses). Viruses and other pathogens also affect what is called "host tropism" or "cell tropism" in which case tropism refers to the way in which different viruses/pathogens have evolved to preferentially target specific host species, or specific cell types within those species. Tropisms are usually named for the stimulus involved (for example, a phototropism is a reaction to light) and may be either positive (towards the stimulus) or negative (away from the stimulus).
the Torrid Zone
the torrid zone
the temperate zones
the temperate zone
大陸ふう
continentalism
the frigid zone
(一般の暑中は)―in summer―(この暑中は)―during the summer―(暑中通じては)―through the summer―all through the summer―throughout the summer
theocrasy