1. The cardinal number that is the sum of three and one
   - four, 4, IV, quatern, quaternion, quaternary, quaternity, quartet, quadruplet, foursome, Little Joe

Derived forms: tetrads

Type of: digit, figure

Encyclopedia: Tetrad

• cigar
• cigar band
• cigar box
• cigar butt
• cigar cutter
• cigar lighter
• cigar smoker
• cigar-box cedar
• cigar-shaped
• cigaret
• cigarette
• cigarette burn
• cigarette butt
• cigarette case
• cigarette holder
• cigarette lighter
• cigarette paper
• cigarette smoker
• cigarfish
• cigarillo
• ciggy
• cilantro
• cilial
• ciliary
• ciliary artery