The cardinal number that is the sum of three and one.

synonyms: 4, four, foursome, Little Joe, quadruplet, quartet, quatern, quaternary, quaternion, quaternity, tetrad ... show more.

Dutch: quaternion, vier, vijf
Polish: czwórka

Administration of nutrients through a vein.

synonym: intravenous feeding.

Being one more than three.

synonyms: 4, four.