Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.


n. pl. ar·che·go·ni·a (-nē-ə)
A multicellular, often flask-shaped, egg-producing organ occurring in mosses, liverworts, ferns, and most gymnosperms.

[New Latin, from Greek arkhegonos, original : arkhe-, arkhi-, archi- + gonos, offspring; see genə- in Indo-European roots.]

ar′che·go′ni·al adj.
ar′che·go′ni·ate (-ĭt) adj.


n, pl -nia (-nɪə)
(Botany) 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]
ˌarcheˈgoniate adj


(ˌɑr kɪˈgoʊ ni əm)

n., pl. -ni•a (-ni ə)
a flask-shaped female reproductive organ of ferns, mosses, and most gymnosperms that contains the gamete.
ar`che•go′ni•al, ar`che•go′ni•ate (-ni ɪt, -ˌeɪt) adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.archegonium - a female sex organ occurring in mosses, ferns, and most gymnosperms
plant organ - a functional and structural unit of a plant or fungus
References in periodicals archive ?
Reduced female gametophyte: this is characterized by the presence of a single archegonium in very reduced circumstances as the egg (cf.
Three comparisons between the morphological and reproductive data support the conclusion that the decline in the 1 mM kinetin treatment in archegonium production when corrected for morphological status reflects a biologically meaningful decrease in reproductive effort: (1) thallus LW declined (visually) in stepwise manner (Fig.
In the micropylar end of the seed, there are two separate membranous structures; the one closely adhering to the sclerotesta is the unvascularised part of the pleurotesta, derived from the inner layers of the integument whilst the other one represents the remains of the nucellus (perisperm), firmly attached to the female gametophyte and covering the archegonium chamber.