| A | B |
| polychromatic | multicolored; many hued; dazzling |
| 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 speaks more than one language. |
| polygon | A closed plane figure bounded by straight sides. |
| polygraph | a machine that writes down many different changes in the body while the person answers questions; a lie detector test. |
| polyhedron | a three-dimensional figure in which each surface is a polygon; a pyramid is an example of this |
| polymorphous | Having or assuming many different forms |
| polysyllabic | a word that has many syllables |
| polytheism | Belief in multiple Gods. |
| polyneuritis | inflammation of many nerves at once |
| polygamy | the custom of having many husbands or wives. |
| polyanthus | a type of plant, especially primrose, which has many flowers |