O

Từ điển Oxford Learners Wordfinder Dictionary

O [O] noun, exclamation, symbol BrE [əʊ] NAmE [oʊ]
noun (also o)(pl. Os, O's, o'sBrE [əʊz] ; NAmE [oʊz] )
1. countable, uncountable the 15th letter of the English alphabet
•‘Orange’ begins with (an) O/‘O’.
2. used to mean ‘zero’ when saying telephone numbers, etc.
•My number is six o double three (= 6033).
see also ↑O grade, ↑O level
 
exclamation (especially literary) = ↑oh
 
symbol
the symbol for the chemical element Oxygen
 

• Từ đồng nghĩa / Synonyms:
  O, type O, group O, oxygen, atomic number 8