OOSPORE
oospore
(noun) a thick-walled sexual spore that develops from a fertilized oosphere in some algae and fungi
Source: WordNet® 3.1
Etymology
Noun
oospore (plural oospores)
(biology) A fertilized female zygote, having thick chitinous walls, that develops from a fertilized oosphere in some algae and fungi
Source: Wiktionary
O"ö*spore, n. Etym: [Gr. (Bot.)
(a) A special kind of spore resulting from the fertilization of an
oösphere by antherozoids.
(b) A fertilized oösphere in the ovule of a flowering plant.
Source: Webster’s Unabridged Dictionary 1913 Edition