Trichite \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.

Source: Webster's Revised Unabridged Dictionary (1913)