O
English Dictionary
->
Letter O
-> O
Search Dictionary:
O Definition
(n)
the
blood
group
whose
red
cells
carry
neither
the
A
nor
B
antigens
; "
people
with
type
O
blood
are
universal
donors
"
(n)
a
nonmetallic
bivalent
element
that
is
normally
a
colorless
odorless
tasteless
nonflammable
diatomic
gas
;
constitutes
21
percent
of
the
atmosphere
by
volume
;
the
most
abundant
element
in
the
earth
''
s
crust
(n)
the
15th
letter
of
the
Roman
alphabet
O Synonyms
atomic number 8
group O
O
oxygen
type O
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