- polymerA long or larger molecule consisting of a chain or network of many repeating units, formed by chemically bonding together many identical or similar small molecules called monomers. A polymer is formed by polymerization, the joining of many monomer molecules.
- PolynesiaA continental region of Oceania, including Easter Island, Hawaii, New Zealand, and most of the islands between them.
- polytheismThe belief in the existence of multiple gods.
- poly-many
- polyarchA state of many rulers, many leaders.
- polycheteAny of many annelid worms, of the class Polychaeta, such as the lugworm; they have a segmented body with pairs of bristles on each segment.
- polycroticOf or pertaining to polycrotism; manifesting polycrotism
- polygyridAny snail in the family Polygyridae.
- polylecticOf or relating to an insect (especially a bee) which collects pollen from the flowers of a variety of unrelated plants.
- polyphyodontAny animal whose teeth are continuously replaced.