| 释义 | trimorphic, a.|traɪˈmɔːfɪk|
[mod. f. Gr. τρίµορϕ-ος (f. τρι- tri- + µορϕή form) + -ic.]
Having, or existing in, three forms: spec. a. Bot. Having flowers with pistils and stamens of three different relative lengths. b. Zool. Exhibiting three different forms (colorations, etc.) in different individuals of a species, or of a colony of polyps. c. Cryst. Of a substance: Occurring in crystals of three fundamentally different forms with the same chemical composition.
1866Darwin Orig. Spec. iv. (ed. 4) 111 The reciprocally dimorphic and trimorphic plants. 1870Nicholson Man. Zool. 19 When two such distinct forms exist the species is said to be ‘dimorphic’, and when three are present it is called trimorphic. 1870Hooker Stud. Flora 147 Lythrum Salicaria..Flowers trimorphic in respect of length of style and filaments in 3 sets of individuals. 1888Rolleston & Jackson Anim. Life 238 The worker bee is a dimorphic female; the soldiers and workers among the Termites are trimorphic with the fully-formed male and female.
So ˈtrimorph Cryst., a trimorphic substance, or each of its three different forms; triˈmorphism, trimorphic condition, occurrence in three different forms (of a plant, animal, or crystalline substance); triˈmorphous a. = trimorphic.
1860Worcester, *Trimorphism, the property of crystallizing in three different forms. Dana. 1862Darwin in Life & Lett. (1887) III. 301 If I can only prove..it [Lythrum] is a grand case of trimorphism, with three different pollens and three stigmas. 1866― Orig. Spec. ii. (ed. 4) 50 There are, however, other cases, namely of dimorphism and trimorphism,..which certain animals of either sex, and certain hermaphrodite plants, habitually present. Thus..the females of certain species of butterflies..appear under two or even three conspicuously distinct forms.
1875Lubbock Wild Flowers iii. 77 Of the foreign species of Oxalis some are dimorphous, some *trimorphous. 1878Gurney Crystallogr. 83 Titanium dioxide is trimorphous, for it not only crystallises as Anatase and Rutile, but also as Brookite. 1909Cent. Dict. Suppl., Trimorph. |
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