| A | B |
| POLYCHROMATIC | having many different colors |
| POLYCLINIC | a hospital that treats many different kinds of diseases |
| POLYDACTYL | having many fingers or toes (more than the normal number) |
| POLYGLOT | a person who knows how to speak, read, or write many languages |
| POLYGON | a closed plane figure with many straight lines that connect |
| POLYGRAPH | a machine that writes down many different changes in the body while a person answers questions; a lie detector |
| POLYHEDRON | a solid figure with many sides, such as a pyramid |
| POLYMORPHOUS | having or assuming many different forms |
| POLYSYLLABIC | having many syllables |
| POLYTHEISM | the belief in many different gods |