- polyptych
- polyptychs
- polyrhythm
- polyribonucleotide
- polyribosome
- polys
- polysaccharide
- polysemous
- polysepalous
- polysome
- polysomes
- polysomic
- polysomics
- polysorbate
- polyspermies
- polyspermy
- polystichous
- polystyrene
- polysulfide
- polysyllabic
- polysyllabical
- polysyllable
- polysynaptic
- polysyndeta
- polysyndeton