dimerous, a.
(ˈdɪmərəs)
[f. mod.L. dimer-us (F. dimère), f. Gr. διµερής bipartite (f. δι- twice + µέρος part) + -ous.]
Consisting of two parts or divisions: spec. a. Entom. Having two joints: applied to the tarsus of an insect. b. Bot. Of a flower: Having two divisions or members in each whorl. (Often written 2-merous.) Of a leaf: Consisting of two leaflets (rare).
| 1826 Kirby & Sp. Entomol. xlvii. (1828) IV. 387 Tarsi mostly trimerous, rarely dimerous. 1845 Lindley Sch. Bot. viii. (1858) 129 Flowers dimerous. 1869 Student II. 12 Polymerous leaves may be dimerous, trimerous, etc. according to their number of meriphylls. 1872 Oliver Elem. Bot. ii. 174 Observe the dimerous symmetry of Enchanter's Nightshade (Circæa), the parts of the flower being in twos. 1882 Vines Sachs' Bot. 646 True tetramerous flowers are allied..to those with dimerous whorls. |