The Collaborative International Dictionary
Germarium
Germarium \Ger*ma"ri*um\, n. [NL. See Germ.] (Zo["o]l.) An organ in which the ova are developed in certain Turbellaria.
Wiktionary
germarium
n. (context biology English) The parts of an ovary and testis (in Rotifera etc) that produces eggs and sperm respectively