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1. Being one more than three
   - four, 4

1. The cardinal number that is the sum of three and one
   - four, 4, tetrad, quatern, quaternion, quaternary, quaternity, quartet, quadruplet, foursome, Little Joe
    
2. Administration of nutrients through a vein
   - intravenous feeding

Derived forms: IVs

See also: cardinal

Type of: alimentation, digit, feeding, figure

Encyclopedia: Iv