\Trich"ite\, n. [Gr. ?, ?, hair.]
1. (Min.) A kind of crystallite resembling a bunch of hairs,
   common in obsidian. See Illust. of {Crystallite}.
2. (Zo["o]l.) A delicate, hairlike siliceous spicule, found
   in certain sponges.
{Trichite sheaf} (Zo["o]l.), one of the small sheaflike
   fascicles of slender set[ae] characteristic of certain
   sponges. See Illust. under {Spicule}.