o-
prefix
short for ortho- (sense 4)
o-1
Chemistry.
1
an abridgment of ortho-.
o-2
1
variant of ob- before m:
omission.
o-3
1
variant of oo-:
oidium.
o-I.
Chemistry
an abridgement of ortho-.
II.
variant of ob-, before m, as in omission.
o-
combining form
or oo-
oology
specifically : ovum
oogonium
abbreviation
orth- or ortho-
| I |
or oo-
ETYMOLOGY Greek ōi-, ōio-, from ōion — more at egg
: eggoology
specifically : ovum
oogonium
| II |
orth- or ortho-
☞ o
See δ-
o-
I.combining form
or oo-
Etymology: Greek ōi-, ōio-, from ōion egg — more at egg
: egg
< oidium >
< oology >
specifically : ovum
< oogenesis >
< oogonium >
II.abbreviation
ortho-
o-
I.
or oo-
< oidium >
< oology >
specifically
< oogenesis >
< oogonium >
II.
o-
Noun
(O negative)
- A blood type that has no antigens. It lacks the A, B and Rh factors on the blood cells. It is the universal donor for blood and can give blood to any blood type, but can only receive O- blood.
Prefix
- organic chemistry ortho-