| thel- | See: thelo-. (05 Mar 2000) |
|---|---|
| thelarche | The beginning of development of the breasts in the female. Origin: thel-+ G. Arche, beginning (05 Mar 2000) |
| Thelazia | The eye worms, a genus of spiruroid nematodes that inhabit the lacrimal ducts and surface of the eyes of various domestic and wild animals, but rarely man; a number of species have been reported from wild birds. Cyclic development occurs in muscoid flies; infective larvae emerge from the fly mouthparts while the fly is feeding on or near the eyes of the host. Origin: G. Thelazo, to suck Thelazia californiensis, a species occurring in the tear ducts, conjunctival sac, or under the nictitating membrane of dogs, coyotes, black bears, sheep, deer, jack rabbits, cats, and occasionally humans in the western and southwestern U.S.; heavy infections cause photophobia, lacrimation, eyelid oedema, conjunctivitis, and even blindness. Thelazia callipaeda, a species reported from man in Southeast Asia and California; the worm, embedded in a subconjunctival tumour or swimming in the aqueous humor after penetrating the corneoscleral limbus, causes pain, photophobia, and tearing. (05 Mar 2000) |
| thelaziasis | Infection with nematodes of the genus Thelazia. (05 Mar 2000) |
| thelazioidea | A superfamily of parasitic nematodes which includes three genera: thelazia, spirocerca, and gnathostoma. Only thelazia and gnathostoma occasionally occur in man. (12 Dec 1998) |
| thele | Synonym: nipple. Origin: G. (05 Mar 2000) |
| theleplasty | Synonym: mammillaplasty. Origin: thel-+ G. Plastos, formed (05 Mar 2000) |
| thelium | 1. A nipple-like structure. 2. A cellular layer. Synonym: nipple. Origin: Mod. L., fr. G. Thele, nipple (05 Mar 2000) |
| thelo- | Thel- The nipples. Compare: mamil-. Origin: G. Thele (05 Mar 2000) |
| theloncus | A neoplasm involving the nipple. Origin: thelo-+ G. Onkos, a mass (05 Mar 2000) |
| thelorrhagia | Bleeding from the nipple. Origin: thelo-+ G. Rhegnymi, to burst forth (05 Mar 2000) |
| thelphusian | <zoology> One of a tribe of fresh water crabs which live in or on the banks of rivers in tropical countries. Origin: Gr. Nipple + to blow, to puff. Source: Websters Dictionary (01 Mar 1998) |
| thelytokous | <zoology> Producing females only; said of certain female insects. Origin: Gr. Female + a bringing forth. Source: Websters Dictionary (01 Mar 1998) |