| HEORTOLOGY | • heortology n. The study of religious festivals. • HEORTOLOGY n. the study of religious feasts. |
| HETEROLOGY | • heterology n. A lack of correspondence between parts that reflects a difference in origin. • HETEROLOGY n. the study of differences. |
| HOROLOGIST | • horologist n. Someone who makes or repairs timepieces, watches or clocks. • HOROLOGIST n. one versed in horology. |
| LIGHTPROOF | • lightproof adj. Sealed so that no light can enter. • LIGHTPROOF adj. impervious to light, also LIGHTTIGHT. |
| MYTHOLOGER | • mythologer n. A mythologist. • MYTHOLOGER n. a mythologist. |
| ORTHOGONAL | • orthogonal adj. (Geometry) Of two objects, at right angles; perpendicular to each other. • orthogonal adj. (Mathematics). • orthogonal adj. (Statistics) Statistically independent, with reference to variates. |
| RHEOLOGIST | • rheologist n. One who studies rheology. • RHEOLOGIST n. one who studies rheology. |
| STRONGHOLD | • stronghold n. A place built to withstand attack; a fortress. • stronghold n. (Figuratively) A place of domination by, or refuge or survival of, a particular group or idea. • STRONGHOLD n. a fortified place. |
| THEOLOGERS | • theologers n. Plural of theologer. • THEOLOGER n. a theologian. |
| THERMOLOGY | • thermology n. The scientific study of heat. • thermology n. Imaging of the body by means of infrared radiation. • THERMOLOGY n. the study of heat. |
| THOROUGHLY | • thoroughly adv. In a thorough or complete manner. • THOROUGH adv. complete, also THORO. |
| TRICHOLOGY | • trichology n. The science or study of hair. • TRICHOLOGY n. the study of hair and its disorders. |
| TROPHOLOGY | • trophology n. (Dated) The science of nutrition. • trophology n. A nutritional approach that advocates specific combinations of foods as central to good health and weight loss. • TROPHOLOGY n. the study of nutrition. |
| WOOLGATHER | • woolgather v. To daydream. • wool-gather v. To daydream. |