| tectorium | 1. An overlaying structure. Synonym: tectorial membrane of cochlear duct. Origin: L. An overlaying surface (plaster, stucco), fr. Tego, pp. Tectus, to cover (05 Mar 2000) |
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| tectospinal | Denoting nerve fibres passing from the mesencephalic tectum to the spinal cord. (05 Mar 2000) |
| tectospinal decussation | See: tegmental decussations. (05 Mar 2000) |
| tectospinal tract | A bundle of thick, heavily myelinated fibres originating in the deep layers of the superior colliculus, crossing to the opposite side in the dorsal tegmental decussation, descending along the median plane, between the medial longitudinal fasciculus dorsally, the medial lemniscus ventrally, into the anterior funiculus of the spinal cord. The tract ends in the medial region of the anterior horn of the cervical spinal cord, and appears to be involved in head movements during visual and auditory tracking. Throughout its course in the brainstem it is accompanied by fibres of the tectobulbar tract. Synonym: tractus tectospinalis, Held's bundle, Loewenthal's bundle, Loewenthal's tract, Marchi's tract, predorsal bundle. (05 Mar 2000) |
| tectrices | <zoology> The wing coverts of a bird. See Covert, and Illust. Of Bird. Origin: NL, fr. L. Tegere, tectum, to cover. Source: Websters Dictionary (01 Mar 1998) |
| tectum | Any rooflike covering or structure. Origin: L. Roof, roofed structure, fr. Tego, pp. Tectus, to cover (05 Mar 2000) |
| tectum mesencephali | The roofplate of the mesencephalon formed by the quadrigeminal bodies. Synonym: lamina tecti mesencephali, tectum mesencephali, lamina quadrigemina, quadrigeminal lamina, quadrigeminal plate. (05 Mar 2000) |
| tecum | <botany> See Tucum. Source: Websters Dictionary (01 Mar 1998) |
| TEDD | <abbreviation> Total end-diastolic diameter. (05 Mar 2000) |
| tedelparin | <chemical> A low-molecular-weight fragment of heparin, prepared by nitrous acid depolymerization of porcine mucosal heparin. The mean molecular weight is 4000-6000 daltons. It is used therapeutically as an antithrombotic agent. Pharmacological action: anticoagulant, fibrinolytic agent. (12 Dec 1998) |
| teek | <botany> See Teak. Source: Websters Dictionary (01 Mar 1998) |
| teel oil | <chemical> The refined fixed oil obtained from the seed of one or more cultivated varieties of sesamum indicum. It is used as a solvent and oleaginous vehicle for drugs and has been used internally as a laxative and externally as a skin softener. It is used also in the manufacture of margarine, soap, and cosmetics. Chemical name: Fats and Glyceridic oils, sesame (12 Dec 1998) |
| teelseed | The seed of sesame. Source: Websters Dictionary (01 Mar 1998) |
| teem | 1. To bring forth young, as an animal; to produce fruit, as a plant; to bear; to be pregnant; to conceive; to multiply. "If she must teem, Create her child of spleen." (Shak) 2. To be full, or ready to bring forth; to be stocked to overflowing; to be prolific; to abound. "His mind teeming with schemes of future deceit to cover former villainy." (Sir W. Scott) "The young, brimful of the hopes and feeling which teem in our time." (F. Harrison) Origin: OE. Temen, AS. Teman, tman, from team. See Team. Source: Websters Dictionary (01 Mar 1998) |
| teemless | Not fruitful or prolific; barren; as, a teemless earth. Source: Websters Dictionary (01 Mar 1998) |