(1):

(n.) The seventh month of the French republican calendar [1792 - 1806]. It began March 21 and ended April 19. See VendEmiaire.

(2):

(a.) Of or pertaining to the germ, or germ cells, as distinguished from the somatic cells.

(3):

(a.) Pertaining or belonging to a germ; as, the germinal vesicle.