Synonyms for O

Synonyms for (noun) O

Synonyms: group O, O, type O

Definition: the blood group whose red cells carry neither the A nor B antigens

Usage: people with type O blood are universal donors

Similar words: blood group, blood type

Definition: human blood cells (usually just the red blood cells) that have the same antigens


Synonyms: O, o

Definition: the 15th letter of the Roman alphabet

Similar words: alphabetic character, letter, letter of the alphabet

Definition: the conventional characters of the alphabet used to represent speech

Usage: his grandmother taught him his letters


Synonyms: atomic number 8, O, oxygen

Definition: 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

Similar words: element, chemical element

Definition: any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter


Similar words: gas

Definition: a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely


Visual thesaurus for O