Oxford logo
Toggle navigation
Redeem
Upgrade
Help
Sign in
Dictionaries
Dictionaries home
English
American English
Academic
Collocations
German-English
Grammar
Grammar home
Practical English Usage
Learn & Practise Grammar (Beta)
Word Lists
Word Lists home
My Word Lists
Topics
Recent additions
Resources
Resources home
Text Checker
Sign in
Dictionaries
Dictionaries home
English
American English
Academic
Collocations
German-English
Grammar
Grammar home
Practical English Usage
Learn & Practise Grammar (Beta)
Word Lists
Word Lists home
My Word Lists
Topics
Recent additions
Resources
Resources home
Text Checker
Redeem
Upgrade
Help
TOP
American English
English
American English
Academic English
Collocations
Practical English Usage
German-English
English-German
English
American English
Enter search text
Definition of
O symbol
from the Oxford Advanced American Dictionary
O
symbol
symbol
NAmE
/
/
oʊ
/
/
jump to other results
the symbol for the chemical element
oxygen
See
O
in the Oxford Advanced Learner's Dictionary
Check pronunciation:
O
Other results
All matches
O
noun
O
exclamation
o'
preposition
oh
exclamation
oxygen
noun
c/o
abbreviation
w/o
abbreviation
o'er
adverb
Jell-O™
noun
o'clock
adverb
care
noun
without
preposition
tam-o'-shanter
noun
jack-o'-lantern
noun
man-of-war
noun
cat-o'-nine-tails
noun
5 o'clock shadow
noun
will-o'-the-wisp
noun
five o'clock shadow
noun
See more
Nearby words
O
noun
O
exclamation
O
symbol
o'
preposition
oaf
noun