diradiation
(daɪreɪdɪˈeɪʃən)
[n. of action from prec.]
1. The diffusion of rays from a luminous body.
| 1706 Phillips (ed. Kersey), Diradiation, a spreading abroad of Beams of Light; also a plashing or setting of Vines in form of Sun-beams. 1883 Syd. Soc. Lex., Diradiation, the emission of light-rays from a luminous body. |
2. Med. (See quots.)
| 1730–6 Bailey (folio), Diradiation (in Medicine) an invigoration of the muscles by the animal spirits. 1823 in Crabb Technol. Dict. 1883 Syd. Soc. Lex., Diradiation..a synonym for Hypnotism. |