Correct spelling for the English word "saiodine" is [sˈe͡ɪədˌiːn], [sˈeɪədˌiːn], [s_ˈeɪ_ə_d_ˌiː_n] (IPA phonetic alphabet).
Trade name of a calcium salt of iodobehenic acid, Ca(C22H42O2I)2, a colorless, inodorous, tasteless powder, used to meet the indications for the ordinary iodides in doses of gr. 15-45 (1.0-3.0).
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.