| trachomatous keratitis | See: pannus, corneal pannus. (05 Mar 2000) |
|---|---|
| trachomatous pannus | Pannus of the superior cornea associated with trachoma. (05 Mar 2000) |
| trachycarpous | <botany> Rough-fruited. Origin: Gr. Rough + fruit. Source: Websters Dictionary (01 Mar 1998) |
| trachychromatic | Denoting a nucleus with very deeply staining chromatin. Origin: G. Trachys, rough, + chromatikos, chromatic (05 Mar 2000) |
| trachymedusae | <zoology> A division of acalephs in which the development is direct from the eggs, without a hydroid stage. Some of the species are parasitic on other medusae. Origin: NL, fr.Gr. Rough + medusa. Source: Websters Dictionary (01 Mar 1998) |
| trachyonychia | Rough-surfaced nails. Origin: G. Trachys, rough, + onyx, onychos, nail, + suffix -ia, condition (05 Mar 2000) |
| trachyphonia | Roughness of voice. Origin: G. Trachys, rough, + phone, voice (05 Mar 2000) |
| trachyspermous | <botany> Rough-seeded. Origin: Gr. Rough + seed. Source: Websters Dictionary (01 Mar 1998) |
| trachystomata | <zoology> An order of tailed aquatic amphibians, including Siren and Pseudobranchus. They have anterior legs only, are eel-like in form, and have no teeth except a small patch on the palate. The external gills are persistent through life. Origin: NL,fr.Gr. Rough + stoma. Source: Websters Dictionary (01 Mar 1998) |
| trachyte | <geology> An igneous rock,usually light gray in colour and breaking with a rough surface. It consists chiefly of orthoclase feldspar with sometimes hornblende and mica. Origin: Gr. Rough, rugged: cg. F. Trachyte. Source: Websters Dictionary (01 Mar 1998) |
| trachytoid | <chemical> Resembling trachyte; used to define the structure of certain rocks. Origin: Trachyte. Source: Websters Dictionary (01 Mar 1998) |
| tracing | 1. Any graphic display of electrical or mechanical cardiovascular events, e.g., electrocardiogram, phlebogram. See: curve. 2. In dentistry, a line or lines, scribed on a table or plate by a pointed instrument, representing a record of movements of the mandible; may be extraoral (made outside the oral cavity) or intraoral (made within the oral cavity). (05 Mar 2000) |
| tracing (cephalometric) | <dentistry> An overlay drawing traced over a cephalometric X-ray that shows specific structures and landmarks that provided a basis for orthodontic therapy. (05 Mar 2000) |
| track | To follow the tracks or traces of; to pursue by following the marks of the feet; to trace; to trail; as, to track a deer in the snow. "It was often found impossible to track the robbers to their retreats among the hills and morasses." (Macaulay) 2. To draw along continuously, as a vessel, by a line, men or animals on shore being the motive power; to tow. Origin: tracked; tracking. 1. A mark left by something that has passed along; as, the track, or wake, of a ship; the track of a meteor; the track of a sled or a wheel. "The bright track of his fiery car." (Shak) 2. A mark or impression left by the foot, either of man or beast; trace; vestige; footprint. "Far from track of men." (Milton) 3. <zoology> The entire lower surface of the foot;-said of birds, ect. 4. A road; a beaten path. "Behold Torquatus the same track pursue." (Dryden) 5. Course; way; as, the track of a comet. 6. A path or course laid out for a race, for exercise, ect. 7. The permanent way; the rails. 8. [Perhaps a mistake for tract] A tract or area, as of land. "Small tracks of ground." Track scale, a railway scale. See Railway. Origin: OF.trac track of horses, mules, trace of animals; of Teutonic origin; cf.D.trek a drawing, trekken to draw, travel, march, MHG. Trechen, pret. Trach. Cf. Trick. Source: Websters Dictionary (01 Mar 1998) |
| track and field | Sports performed on a track, field, or arena and including running events and other competitions, such as the pole vault, shot put, etc. (12 Dec 1998) |