oo-

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

oogenesis
oogenetic
oogenic
oogenous
oogonium
oograph
A mechanical device for accurately measuring the outline of a bird’s egg.
ooid
ooidal
ookinesis
ookinete
oolite
1. A sedimentary rock, often shale, clay, or sandstone, that is made up of small spherical grains consisting of concentric layers.
2. A variety of limestone, consisting of small round grains, resembling the roe of a fish.
oolith
oologic
oological
oologist