1. (noun) four, 4, IV, tetrad, quatern, quaternion, quaternary, quaternity, quartet, quadruplet, foursome, Little Joe
the cardinal number that is the sum of three and one
Synonyms: quartette, quadruple, quaternion, quartet, quaternary, quad, tetrad, four, foursome, quaternity, intravenous feeding, quadruplet, quatern, four-spot
Antonyms: ordinal
2. (adj) intravenous feeding, IV
administration of nutrients through a vein
Synonyms: foursome, quaternion, quartet, intravenous feeding, quaternity, tetrad, quaternary, four, quadruplet, quatern
Antonyms: ordinal
3. (adj) four, 4, iv
being one more than three
Synonyms: iv, four
Antonyms: ordinal
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Synonyms and Antonyms of IV 
