| CALYPTRAS | • calyptras n. Plural of calyptra. • CALYPTRA n. a hood or hoodlike structure, esp. that covering the spore capsule of mosses and liverworts, also CALYPTER, CALYPTERA. |
| CATOPTRIC | • catoptric adj. Of, relating to, or produced by mirrors or reflections. • CATOPTRIC adj. relating to reflection, also CATOPTRICAL. |
| CHAPTRELS | • chaptrels n. Plural of chaptrel. • CHAPTREL n. the capital of a pillar which supports an arch. |
| CLAPTRAPS | • claptraps n. Plural of claptrap. • CLAPTRAP n. flashy, empty words. |
| COMPTROLL | • comptroll n. Archaic form of control. • comptroll v. Archaic form of control. • COMPTROLL v. (obsolete) to control, esp. in a financial sense, also CONTROL, CONTROUL, COUNTROL. |
| DIOPTRATE | • dioptrate adj. (Entomology) Divided transversely. • DIOPTRATE adj. of insects, having the compound eye divided transversely. |
| DIOPTRICS | • dioptrics n. Plural of dioptric. • dioptrics n. The study of the refraction of light, especially by lenses. • DIOPTRICS n. the study of light refraction. |
| DUMPTRUCK | • dump␣truck n. A heavy truck, for carrying loose, bulk cargo, having a hinged bed that allows the contents to be unloaded… • dump␣truck n. (Slang) A large pair of buttocks. • DUMPTRUCK n. a lorry with a tipping container. |
| FLAPTRACK | • flaptrack n. (Aviation) The track on which the flaps of an aircraft are mounted. • FLAPTRACK n. a racetrack for flapping i.e. unregistered horse-racing. |
| KALYPTRAS | • kalyptras n. Plural of kalyptra. • KALYPTRA n. (Greek) a veil worn by Greek women. |
| OPTRONICS | • optronics n. Optoelectronics. • OPTRONICS n. the study or use of devices involving the interaction of electronic and light signals. |
| SCEPTRING | • sceptring v. Present participle of sceptre. • SCEPTRE v. to invest with royal authority, also SCEPTER. |
| TEMPTRESS | • temptress n. An alluring woman who seduces or exploits men. • temptress n. A woman considered sexually attractive by men. • TEMPTRESS n. a female tempter. |
| TIPTRONIC | • TIPTRONIC n. a type of gearbox that has both manual and automatic options. |
| UPTRAINED | • uptrained v. Simple past tense and past participle of uptrain. • UPTRAIN v. (obsolete) to train up, educate. |
| UPTRILLED | • UPTRILLED adj. (Coleridge) trilled high. |