| tectibranch | <zoology> One of the Tectibranchiata. Also used adjectively. Source: Websters Dictionary (01 Mar 1998) |
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| tectibranchiata | <zoology> An order, or suborder, of gastropod Mollusca in which the gills are usually situated on one side of the back, and protected by a fold of the mantle. When there is a shell, it is usually thin and delicate and often rudimentary. The aplysias and the bubble shells are examples. Origin: NL, fr. L. Tectus (p.p. Of tegere to cover) + Gr. A gill. (01 Mar 1998) |
| tectibranchiate | <zoology> Having the gills covered by the mantle; of or pertaining to the Tectibranchiata. A tectibranchiate mollusk. Origin: L. Tectus (p.p. Of tegere to cover) + E. Branchiate. Source: Websters Dictionary (01 Mar 1998) |
| tectiform | Roof-shaped. (05 Mar 2000) |
| tectiviridae | A family of lipid-containing bacteriophages with double capsids which infect both gram-negative and gram-positive bacteria. It has one genus, tectivirus. (12 Dec 1998) |
| tectobulbar tract | Fibres originating in the deep layers of the superior colliculus and accompanying the tectospinal tract but, unlike the latter, terminating in medial regions of the pontine and medullary tegmentum. Synonym: tractus tectobulbaris. (05 Mar 2000) |
| tectocephalic | Synonym: scaphocephalic. Origin: L. Tectum, roof, + G. Kephale, head (05 Mar 2000) |
| tectocephaly | <anatomy> A deformed condition of the skull, in which the vault is narrow, clongated, and more or less boat-shaped. Origin: Gr. A boat + head. Source: Websters Dictionary (01 Mar 1998) |
| tectology | <biology> A division of morphology created by Haeckel; the science of organic individuality constituting the purely structural portion of morphology, in which the organism is regarded as composed of organic individuals of different orders, each organ being considered an individual. See Promorphology, and Morphon. Origin: Gr. A carpenter. Source: Websters Dictionary (01 Mar 1998) |
| tectonic | 1. Relating to variations in structure in the eye, particularly the cornea. 2. Obsolete term denoting plastic surgery or the restoration of lost parts by grafting. Origin: G. Tektonikos, relating to building (05 Mar 2000) |
| tectonic keratoplasty | Grafting to replace lost corneal tissue. (05 Mar 2000) |
| tectopontine tract | A fibre bundle arising in the superior colliculus, passing caudoventrally on the same side along the medial side of the lateral lemniscus, issuing fibres terminating in the lateral zone of the mesencephalic tegmentum, and ending in the lateral part of the gray matter of the ventral part of the pons. Synonym: tract of Munzer and Wiener, tractus tectopontinus. (05 Mar 2000) |
| tectorial | <anatomy> Of or pertaining to covering; applied to a membrane immediately over the organ of Corti in the internal ear. Origin: L. Tectorius. Source: Websters Dictionary (01 Mar 1998) |
| tectorial membrane | A gelatinous membrane, attached to the bony spiral lamina, which overlies the hair cells within the cochlea of the inner ear. (12 Dec 1998) |
| tectorial membrane of cochlear duct | A gelatinous membrane that overlies the spiral organ (Corti) in the inner ear. Synonym: membrana tectoria ductus cochlearis, Corti's membrane, tectorium. (05 Mar 2000) |