ar·che·go·ni·um 
(är′kĭ-gōnē-əm)
(är′kĭ-gōnē-əm)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 the Appendix of Indo-European roots.]
ar′che·goni·al adj.
ar′che·goni·ate (-ĭt) adj.
- Rodney Robert
- Rodolfo Guglielmi.
- rodomontade
- Rodrigo Borgia.
- Rodrigo Díaz de Vivar.
- roe
- Roebling
- roebuck
- roe deer
- roentgen
- Roentgen
- roentgenium
- roentgenize
- roentgeno-
- roentgenogram
- roentgenograph
- roentgenographic
- roentgenographically
- roentgenography
- roentgenologic
- roentgenological
- roentgenologically
- roentgenologist
- roentgenology
- roentgenoscope