Ger"mi*nal, a. (Biol.) Of or pertaining to the germ, or germ cells, as distinguished from the somatic cells.

Ger"mi*nal (?), a. [See Germ.] Pertaining or belonging to a germ; as, the germinal vesicle.

Germinal layers(Biol.), the two layers of cells, the ectoblast and entoblast, which form respectively the outer covering and inner wall of the gastrula. A third layer of cells, the mesoblast, which is formed later and lies between these two, is sometimes included. -- Germinal membrane. (Biol.)Same as Blastoderm. -- Germinal spot(Biol.), the nucleolus of the ovum. -- Germinal vesicle, (Biol.), the nucleus of the ovum of animals.

||Ger`mi*nal" (?), n. [F. See Germ .] The seventh month of the French republican calendar [1792 -- 1806]. It began March 21 and ended April 19. See VendÉmiaire.

Ger"mi*nal, a. (Biol.) Of or pertaining to the germ, or germ cells, as distinguished from the somatic cells.