also lio-, comb. form of Gr. λεῖος smooth, appearing as the first element of certain scientific words, as: Leiodere Zool. [Gr. δέρος skin], one of the genus Leiodera of American iguanoid lizards (Cent. Dict.). Leioglossate a. [Gr. γλῶσσα tongue], having the characteristics of the group Leioglossa of octopod cephalopods, which have no radula. ǁ Leiomyoma Path. [see MYOMA], the form of myoma which is composed of unstriated muscular fibre (Syd. Soc. Lex., 1888). Leiophyllous a. Bot. [Gr. φύλλον], having smooth leaves. Leiotrichous a. [Gr. τριχ-, θρίξ hair], smooth-haired, belonging to the group ǁ Leiotrichi, one of the two primary divisions into which mankind is considered by some to be divisible.
1866. Huxley, Preh. Rem. Caithn., 132. Bory de St. Vincents two primary divisions of the genus Homo, the Leiotrichi, or smooth-haired, and the Ulotrichi, or crisp-haired.
1881. West, in Jrnl. Bot., X. 115. This species belongs to the orthocarpous leiophyllous Hypnaceae.