| quasar | (noun) a starlike object that may send out radio waves and other forms of energy; many have large red shifts | Synonyms: quasi-stellar radio source |
|---|
| quash | (verb) put down by force or intimidation | Synonyms: keep down, reduce, repress, subdue, subjugate |
|---|
| (verb) declare invalid | Synonyms: annul, avoid, invalidate, nullify, void |
| quasi | (adjective) having some resemblance | - |
|---|
| quasiparticle | (noun) a quantum of energy (in a crystal lattice or other system) that has position and momentum and can in some respects be regarded as a particle | - |
|---|
| quassia | (noun) handsome South American shrub or small tree having bright scarlet flowers and yielding a valuable fine-grained yellowish wood; yields the bitter drug quassia from its wood and bark | Synonyms: bitterwood, Quassia amara |
|---|
| (noun) a bitter compound used as an insecticide and tonic and vermifuge; extracted from the wood and bark of trees of the genera Quassia and Picrasma | - |