rhombogen
(ˈrɒmbəʊdʒən)
[ad. F. rhombogène (E. van Beneden 1876, in Bull. de l'Acad. R. de Belgique XLI. 1195); f. Gr. ῥόµβος rhombus + -gen.]
In the Dicyemidæ, the form which produces infusoriform embryos. Hence rhomboˈgenic a.
| 1883 [see infusorigen]. 1885 [see nematogenic]. 1888 Rolleston & Jackson Anim. Life 815 The Rhombogen and secondary Nematogen are successive phases in the life-history of one and the same individual. 1899, 1972 [see nematogen s.v. nemato-]. |