| thrix annulata | A rare condition in which the hair shows alternate pigmented and bright segments, the latter due to air cavities within the cortex. Synonym: leukotrichia annularis, pili annulati, thrix annulata, trichonosus versicolor. (05 Mar 2000) |
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| thrix | Synonym: hair. Origin: G. (05 Mar 2000) |
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| annulata | <zoology> A class of articulate animals, nearly equivalent to Annelida, including the marine annelids, earthworms, Gephyrea, Gymnotoma, leeches, etc. See Annelida. Origin: Neut. Pl, fr. L. Annulatus ringed. Source: Websters Dictionary (01 Mar 1998) |
| theileria annulata | A protozoan parasite causing tropical theileriasis in cattle. It is transmitted by ticks of the hyalomma genus. (12 Dec 1998) |