| a. | 1. | |
| 1. | Of or pertaining to a square, or to squares; resembling a quadrate, or square; square. | |
| 2. | (Crystallog.) Tetragonal. | |
| 3. | (Alg.) Pertaining to terms of the second degree; |
| Noun | 1. | quadratic - an equation in which the highest power of an unknown quantity is a square Synonyms: quadratic equation |
| 2. | quadratic - a polynomial of the second degree Synonyms: quadratic polynomial | |
| Adj. | 1. | quadratic - of or relating to or resembling a square; "quadratic shapes" |
| 2. | quadratic - of or relating to the second power; "quadratic equation" |