| trabecular meshwork | A porelike structure surrounding the entire circumference of the anterior chamber through which aqueous humor circulates to the canal of schlemm. (12 Dec 1998) |
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| trabecular network | The network of fibres (pectinate ligaments) at the iridocorneal angle between the anterior chamber of the eye and the venous sinus of the sclera; it contains spaces between the fibres that are involved in drainage of the aqueous humor, and is composed of two portions: the corneoscleral part, the part attached to the sclera, and the uveal part, the part attached to the iris. Synonym: reticulum trabeculare sclerae, Gerlach's valvula, Hueck's ligament, ligamentum annulare bulbi, pectinate ligaments of iridocorneal angle, pillar of iris, trabecular meshwork, trabecular network, trabecular zone. (05 Mar 2000) |
| trabecular reticulum | The network of fibres (pectinate ligaments) at the iridocorneal angle between the anterior chamber of the eye and the venous sinus of the sclera; it contains spaces between the fibres that are involved in drainage of the aqueous humor, and is composed of two portions: the corneoscleral part, the part attached to the sclera, and the uveal part, the part attached to the iris. Synonym: reticulum trabeculare sclerae, Gerlach's valvula, Hueck's ligament, ligamentum annulare bulbi, pectinate ligaments of iridocorneal angle, pillar of iris, trabecular meshwork, trabecular network, trabecular zone. (05 Mar 2000) |
| trabecular zone | The network of fibres (pectinate ligaments) at the iridocorneal angle between the anterior chamber of the eye and the venous sinus of the sclera; it contains spaces between the fibres that are involved in drainage of the aqueous humor, and is composed of two portions: the corneoscleral part, the part attached to the sclera, and the uveal part, the part attached to the iris. Synonym: reticulum trabeculare sclerae, Gerlach's valvula, Hueck's ligament, ligamentum annulare bulbi, pectinate ligaments of iridocorneal angle, pillar of iris, trabecular meshwork, trabecular network, trabecular zone. (05 Mar 2000) |
| trabeculate | <botany> Crossbarred, as the ducts in a banana stem. Source: Websters Dictionary (01 Mar 1998) |
| trabeculated bladder | Characterised by thick wall and hypertrophied muscle bundles. Typically seen in instances of long-standing obstruction. (05 Mar 2000) |
| trabeculation | 1. The occurrence of trabeculae in the walls of an organ or part. 2. The process of forming trabeculae, as in spongy bone. (05 Mar 2000) |
| trabeculectomy | Any surgical procedure for treatment of glaucoma by means of puncture or reshaping of the trabecular meshwork. It includes goniotomy, trabeculotomy, and laser perforation. (12 Dec 1998) |
| trabeculoplasty | Photocoagulation of the trabecular meshwork of the eye using the laser in the treatment of glaucoma. (05 Mar 2000) |
| trabeculotomy | Surgical opening of the sinus venosus sclerae (canal of Schlemm) to treat glaucoma. Origin: trabekula + G. Tome, incision (05 Mar 2000) |
| trabu | <zoology> Same as Trubu. Source: Websters Dictionary (01 Mar 1998) |
| trace | 1. To mark out; to draw or delineate with marks; especially, to copy, as a drawing or engraving, by following the lines and marking them on a sheet superimposed, through which they appear; as, to trace a figure or an outline; a traced drawing. "Some faintly traced features or outline of the mother and the child, slowly lading into the twilight of the woods." (Hawthorne) 2. To follow by some mark that has been left by a person or thing which has preceded; to follow by footsteps, tracks, or tokens. "You may trace the deluge quite round the globe." (T. Burnet) "I feel thy power . . . To trace the ways Of highest agents." (Milton) 3. Hence, to follow the trace or track of. "How all the way the prince on footpace traced." (Spenser) 4. To copy; to imitate. "That servile path thou nobly dost decline, Of tracing word, and line by line." (Denham) 5. To walk over; to pass through; to traverse. "We do tracethis alley up and down." (Shak) Origin: OF. Tracier, F. Tracer, from (assumed) LL. Tractiare, fr.L. Tractus, p. P. Of trahere to draw. Cf. Abstract, Attract, Contract, Portratt, Tract, Trail, Train, Treat. 1. A mark left by anything passing; a track; a path; a course; a footprint; a vestige; as, the trace of a carriage or sled; the trace of a deer; a sinuous trace. 2. <chemistry> A very small quantity of an element or compound in a given substance, especially when so small that the amount is not quantitatively determined in an analysis;-hence, in stating an analysis, often contracted to tr. 3. A mark, impression, or visible appearance of anything left when the thing itself no longer exists; remains; token; vestige. "The shady empire shall retain no trace Of war or blood, but in the sylvan chase." (Pope) 4. <geometry> The intersection of a plane of projection, or an original plane, with a coordinate plane. 5. The ground plan of a work or works. Syn.-Vestige; mark; token. See Vestige. Origin: F. Trace. See Trace. Source: Websters Dictionary (01 Mar 1998) |
| trace conditioned reflex | A conditioned reflex established by applying the stimulus a short time before reinforcement; in the conditioned reflex of the animal so prepared, the response occurs at the same interval of time after the application of the stimulus as during the period of training. (05 Mar 2000) |
| trace conditioning | Conditioning when there is no temporal overlap between the conditioning stimulus and the unconditioned stimulus. (05 Mar 2000) |
| trace element | Any chemical element that an organism needs very small quantities of tosurvive. (09 Oct 1997) |