| DIRECTRIX | • directrix n. A female who directs; a directress. • directrix n. (Geometry) A line used to define a curve or surface; especially a line, the distance from which a point… • DIRECTRIX n. a female director, also DIRECTRESS, DIRECTRICE. |
| DITHERIER | • DITHERY adj. nervously excited. |
| IRRADIANT | • irradiant adj. That radiates light. • IRRADIANT adj. irradiating or illuminating; as, the irradiant moon. |
| IRRADIATE | • irradiate v. (Transitive, literary, poetic) To illuminate; to brighten; to shine light on. • irradiate v. (Transitive, literary, poetic) To enlighten intellectually; to illuminate. • irradiate v. (Transitive, literary, poetic) To animate by heat or light. |
| IRRIDENTA | • irridenta n. A region that has ethnic or historic ties to a political entity (such as a country) other than the one that rules it. • IRRIDENTA n. (Italian) a region containing people ethnically related to the inhabitants of one State but politically subject to another, also IRREDENTA. |
| IRRIGATED | • irrigated v. Simple past tense and past participle of irrigate. • IRRIGATE v. to water by canals or watercourses. |
| IRRITATED | • irritated v. Simple past tense and past participle of irritate. • irritated adj. Experiencing a feeling of irritation. • irritated adj. (Pathology) Inflamed and painful. |
| TERRIFIED | • terrified adj. Extremely frightened. • terrified v. Simple past tense and past participle of terrify. • TERRIFY v. to cause terror in. |
| TINDERIER | • TINDERY adj. like tinder. |
| TORRIDITY | • torridity n. The property of being torrid. • TORRIDITY n. torridness. |
| TORRIFIED | • torrified v. Simple past tense and past participle of torrify. • TORRIFY v. to subject to intense heat, also TORREFY. |
| TORTRICID | • tortricid n. (Zoology) Any moth of the family Tortricidae. • TORTRICID n. any moth of the family Tortricidae. |
| TRIHYBRID | • trihybrid n. (Biology) A hybrid whose parents differ by three pairs of contrasting Mendelian characters. • TRIHYBRID n. a hybrid differing from its parents in three independently heritable characteristics. |
| TRIHYDRIC | • trihydric adj. (Organic chemistry) Having three hydroxy groups. • TRIHYDRIC adj. having three hydroxyl groups. |
| TRIRADIAL | • triradial adj. Radiating outward in three directions. • TRIRADIAL adj. three-rayed, also TRIRADIATE. |