[pik-nee-uh m]

noun, plural pyc·ni·a [pik-nee-uh] /ˈpɪk ni ə/. Mycology.

a flask-shaped or conical sporangium of a rust fungus, which develops below the epidermis of the host and bears pycniospores.

Origin of pycnium

From New Latin, dating back to 1900–05; see origin at pycn-, -ium
Related formspyc·ni·al, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019