|—n , pl -nia|
|a female sex organ, occurring in mosses, spore-bearing vascular plants, and gymnosperms, that produces a single egg cell in its swollen base|
|[C19: from New Latin, from Greek arkhegonos original parent, from arkhe- chief, first + gonos seed, race]|
|archegonium (är'kĭ-gō'nē-əm) Pronunciation Key
The egg-producing organ occurring in bryophytes (such as mosses and liverworts), ferns, and most gymnosperms. The archegonium is a multicellular, often flask-shaped structure that contains a single egg. Compare antheridium.