radiature|ˈreɪdɪətjə(r)| [f. as prec. + -ure.] Radiation; an act of radiation. 1704Norris Ideal World ii. iii. 190 The proper business of opticks, to consider the radiature of light.1883Nature 8 Feb. 351 In these radiatures motion is conveyed through space by transfer of vibratory motions.