oo-

(Greek: egg or eggs; used in an extended sense as the ovum)

oology
oometer
oomycetous
A reference to the fungi of the class Oomycetes (class of aquatic fungi, the water molds).
oomycosia
oophore
oophorectomy, ovariectomy
The excision or removal of one or both ovaries by surgery.
oophoritis
oophoroma
oophyte
ooplasm
oopod
oorhodein
ooscope
An instrument for examining the inside or interior aspects of eggs.
ooscopy
The observation or examination of the development of an embryo inside an egg by means of an ooscope.
oosome