| INTERRADIAL | • interradial adj. Between the radii, or rays. • INTERRADIAL adj. between radii or rays. |
| INTERRADIUS | • interradius n. Any interradial part, but especially the radius of a coelenterate halfway between two perradii. • INTERRADIUS n. a radius midway between primary radii or perradii. |
| IRRADIANCES | • irradiances n. Plural of irradiance. • IRRADIANCE n. the act of irradiating, also IRRADIANCY. |
| IRRADIATING | • irradiating v. Present participle of irradiate. • IRRADIATE v. to shed light or other rays upon or into. |
| IRRADIATION | • irradiation n. An act of irradiating, or state of being irradiated. • irradiation n. (Obsolete) illumination; irradiance; brilliance. • irradiation n. (Obsolete, figurative) mental light or illumination. |
| IRRADIATIVE | • irradiative adj. That irradiates. • irradiative adj. That involves radiation. • IRRADIATIVE adj. performing irradiation. |
| IRRADIATORS | • irradiators n. Plural of irradiator. • IRRADIATOR n. something or someone that irradiates. |
| IRRADICABLE | • irradicable adj. (Rare) Incapable of being rooted out or eradicated. • IRRADICABLE adj. that cannot be eradicated. |
| IRRADICABLY | • irradicably adv. In an irradicable manner. • IRRADICABLE adv. that cannot be eradicated. |
| IRRADICATED | • irradicated v. Simple past tense and past participle of irradicate. • IRRADICATE v. to fix firmly. |
| IRRADICATES | • irradicates v. Third-person singular simple present indicative form of irradicate. • IRRADICATE v. to fix firmly. |
| SERRADELLAS | • SERRADELLA n. a species of clover grown as fodder, also SERRADILLA. |
| SERRADILLAS | • SERRADILLA n. a species of clover grown as fodder, also SERRADELLA. |
| TARRADIDDLE | • tarradiddle n. A trivial lie, a fib. • tarradiddle n. Silly talk or writing; humbug. • TARRADIDDLE n. a fib; a piece of pretentious nonsense, also TARADIDDLE. |