Source : Webster's Revised Unabridged Dictionary (1913)

Holotricha \Ho*lot"ri*cha\ (h[-o]*l[o^]t"r[i^]*k[.a]), n. pl.
   [NL., fr. Gr. "o`los whole + qri`x, tricho`s, a hair.]
   (Zo["o]l.)
   A group of ciliated Infusoria, having cilia all over the
   body.