noun, plural per·i·the·ci·a [per-uh-thee-shee-uh, -shuh, -see-uh] /ˌpɛr əˈθi ʃi ə, -ʃə, -si ə/. Mycology.
Related formsper·i·the·ci·al, adjective
Examples from the Web for perithecium
When fully mature, the asci are ruptured and the sporidia escape by a pore which occupies the apex of the perithecium.
A perithecium, or cell excavated in the stroma which fulfils the functions of a perithecium, is always present.
The group 342 is characterized by a special type of ascocarp, the perithecium.
Moeller, on the contrary, represents each body as a perithecium, and our examination confirms Moeller's view.
D, The same, beginning to be surrounded by the hyphae forming the perithecium wall.