Bot. [ad. G. zygospor: see ZYGO- and SPORE.] A spore formed by conjugation; a germ-cell arising from the fusion of two similar cells (gametes), as in certain Algæ and Fungi.
1864. Q. Jrnl. Microscop. Sci. (N.S.), IV. 178. I have … made use of … the more apt term ‘Zygospore,’ as suggested by Professor De Bary in his work ‘Untersuchungen …’ in preference to the … inaccurate term ‘Sporangium’ of most other authors.
1874. Cooke, Fungi, 164. The threads which conjugate to form the zygospores.
