adjective, noun, verb, -rat⋅ed, -rat⋅ing.| 1. | square or rectangular. |
| 2. | Zoology. of or pertaining to the quadrate. |
| 3. | Heraldry. (of a cross) having an enlarged square at the junction of the limbs: a cross quadrate. |
| 4. | a square. |
| 5. | something square or rectangular. |
| 6. | Zoology. one of a pair of bones in the skulls of many lower vertebrates, to which the lower jaw is articulated. |
| 7. | to cause to conform or harmonize; adapt. |
| 8. | to agree; conform. |

quadrate quad·rate (kwŏd'rāt', -rĭt)
adj.
Having four sides and four angles; square or rectangular.