pycnium: Meaning and Definition of

pyc•ni•um

Pronunciation: (pik'nē-um), [key]
— pl. -ni•a
  1. a flask-shaped or conical sporangium of a rust fungus, which develops below the epidermis of the host and bears pycniospores.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.