Webster’s Revised Unabridged Dictionary · 1913
Diradiation
Di·ra′di·a′tion (dī·rā′dĭ·ā′shŭn), n. [Pref. di- + radiation.] The emission and diffusion of rays of light.
Webster’s Revised Unabridged Dictionary · 1913
Di·ra′di·a′tion (dī·rā′dĭ·ā′shŭn), n. [Pref. di- + radiation.] The emission and diffusion of rays of light.