| Tomes, Sir John | <person> English dentist and anatomist, 1815-1895. See: Tomes' fibres, Tomes' granular layer. (05 Mar 2000) |
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| tomium | <ornithology> The cutting edge of the bill of a bird. Origin: NL, fr. Gr. To cut. Source: Websters Dictionary (01 Mar 1998) |
| Tommaselli's disease | Haemoglobinuria and pyrexia due to quinine intoxication. (05 Mar 2000) |
| Tommaselli, Salvatore | <person> Italian physician, 1834-1906. See: Tommaselli's disease. (05 Mar 2000) |
| tomnoddy | 1. <zoology> A sea bird, the puffin. 2. A fool; a dunce; a noddy. Origin: Tom (see Tomboy) + noddy. Source: Websters Dictionary (01 Mar 1998) |
| tomogram | <radiology> A radiograph obtained by tomography. Origin: G. Tomos, a cutting (section) + gramma, a writing (05 Mar 2000) |
| tomograph | <equipment> The radiographic equipment used in tomography. Origin: G. Tomos, a cutting (section), + grapho, to write (05 Mar 2000) |
| tomography | <procedure, radiology> The recording of internal body images at a predetermined plane by means of the tomograph, also called body section roentgenography. Origin: Gr. Graphein = to write (18 Nov 1997) |
| tomolevel | An obsolete term for the level at which tomography is performed. (05 Mar 2000) |
| tomomania | <psychiatry> An irrational desire to use operative procedures by a doctor or a patient. Origin: G. Tomos, cutting, + mania, frenzy (05 Mar 2000) |
| tomopteris | <zoology> A genus of transparent marine annelids which swim actively at the surface of the sea. They have deeply divided or forked finlike organs (parapodia). This genus is the type of the order, or suborder, Gymnocopa. Origin: NL, fr. Gr. A cut + wing (but taken to mean, fin). Source: Websters Dictionary (01 Mar 1998) |
| tompon | An inking pad used in lithographic printing. Origin: F. Tampon. See Tampion. Source: Websters Dictionary (01 Mar 1998) |
| tomtit | <zoology> A titmouse, especially. The blue titmouse. The wren. Origin: Tom (see Tomboy) + tit the bird. Source: Websters Dictionary (01 Mar 1998) |
| ton | The prevailing fashion or mode; vogue; as, things of ton. "If our people of ton are selfish, at any rate they show they are selfish." (Thackeray) Bon ton. Origin: F. See Tone. A measure of weight or quantity. Specifically: The weight of twenty hundredweight. In England, the ton is 2,240 pounds. In the United States the ton is commonly estimated at 2,000 pounds, this being sometimes called the short ton, while that of 2,240 pounds is called the long ton. Forty cubic feet of space, being the unit of measurement of the burden, or carrying capacity, of a vessel; as a vessel of 300 tons burden. See the Note under Tonnage. A certain weight or quantity of merchandise, with reference to transportation as freight; as, six hundred weight of ship bread in casks, seven hundred weight in bags, eight hundred weight in bulk; ten bushels of potatoes; eight sacks, or ten barrels, of flour; forty cubic feet of rough, or fifty cubic feet of hewn, timber, etc. Ton and tun have the same etymology, and were formerly used interchangeably; but now ton generally designates the weight, and tun the cask. See Tun. Origin: OE. Tonne, tunne, a tun, AS. Tunne a tun, tub, a large vessel; akin to G. & F. Tonne a ton, tun, LL. Tunna a tun; all perhaps of Celtic origin; cf. Ir. & Gael. Tunna a tun. Cf. Tun,Tunnel. <zoology> The common tunny, or house mackerel. Origin: Cf. Tunny. Source: Websters Dictionary (01 Mar 1998) |
| tonaphasia | Loss, through cerebral lesion, of the ability to remember tunes. Origin: G. Tonos, tone, + a-priv. + phasis, speech (05 Mar 2000) |