| tilestone | 1. <geology> A kind of laminated shale or sandstone belonging to some of the layers of the Upper Silurian. 2. A tile of stone. Source: Websters Dictionary (01 Mar 1998) |
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| tiletamine | <chemical> Proposed anaesthetic with possible anticonvulsant and sedative properties. Pharmacological action: anaesthetics, dissociative, anticonvulsants. Chemical name: Cyclohexanone, 2-(ethylamino)-2-(2-thienyl)- (12 Dec 1998) |
| tiliaceous | <botany> Of, pertaining to, or resembling, a natural order of plants (Tiliaceae) of which the linden (Tilia) is the type. The order includes many plants which furnish a valuable fibre, as the jute. Origin: OE. Tilia the linden tree. Source: Websters Dictionary (01 Mar 1998) |
| tilidine | <chemical> 2-(dimethylamino)-1-phenyl-3-cyclohexene-1-carboxylic acid ethyl ester. An opioid analgesic used similarly to morphine in the control of moderate to severe pain. Pharmacological action: analgesics, opioid, narcotics. Chemical name: 3-Cyclohexene-1-carboxylic acid, 2-(dimethylamino)-1-phenyl-, ethyl ester, trans-(+-)- (12 Dec 1998) |
| till | 1. To plow and prepare for seed, and to sow, dress, raise crops from, etc, to cultivate; as, to till the earth, a field, a farm. "No field nolde [would not] tilye." (P. Plowman) "the Lord God sent him forth from the garden of Eden, to till the ground from whence he was taken." (Gen. Iii. 23) 2. To prepare; to get. Origin: OE. Tilen, tilien, AS. Tilian, teolian, to aim, strive for, till; akin to OS. Tilian to get, D. Telen to propagate, G. Zielen to aim, ziel an end, object, and perhaps also to E. Tide, time, from the idea of something fixed or definite. Cf. Teal, Till. 1. <geology> A deposit of clay, sand, and gravel, without lamination, formed in a glacier valley by means of the waters derived from the melting glaciers; sometimes applied to alluvium of an upper river terrace, when not laminated, and appearing as if formed in the same manner. 2. A kind of coarse, obdurate land. Source: Websters Dictionary (01 Mar 1998) |
| tillage | 1. The operation, practice, or art of tilling or preparing land for seed, and keeping the ground in a proper state for the growth of crops. 2. A place tilled or cultivated; cultivated land. Synonym: Cultivation, culture, husbandry, farming, agriculture. Source: Websters Dictionary (01 Mar 1998) |
| tillandsia | <botany> A genus of epiphytic endogenous plants found in the Southern United States and in tropical America. Tillandsia usneoides, called long moss, black moss, Spanish moss, and Florida moss, has a very slender pendulous branching stem, and forms great hanging tufts on the branches of trees. It is often used for stuffing mattresses. Origin: NL. So named after Prof. Tillands, of Abo, in Finland. Source: Websters Dictionary (01 Mar 1998) |
| Tillaux | Paul J., French surgeon, 1834-1904. See: spiral of Tillaux. (05 Mar 2000) |
| tillaux fracture | <radiology> Fracture of lateral aspect of distal tibia, analog of Salter III fracture of distal tibia in kids: distal tibial epiphysis closes in 12-18 months, medial portion closes first (12 Dec 1998) |
| tiller | Sprout, stalk, especially one from the base of a plant or from the axils of its lower leaves. (09 Oct 1997) |
| tilley | <botany> The seeds of a small tree (Croton Pavana) common in the Malay Archipelago. These seeds furnish croton oil, like those of Croton Tiglium. Alternative forms: tilly. Source: Websters Dictionary (01 Mar 1998) |
| tilley seed | <botany> The seeds of a small tree (Croton Pavana) common in the Malay Archipelago. These seeds furnish croton oil, like those of Croton Tiglium. Alternative forms: tilly. Source: Websters Dictionary (01 Mar 1998) |
| tillodontia | <paleontology> An extinct group of Mammalia found fossil in the Eocene formation. The species are related to the carnivores, ungulates, and rodents. Synonym: Tillodonta. Source: Websters Dictionary (01 Mar 1998) |
| tilmus | <medicine> Floccillation. Origin: NL, fr. Gr, fr. To pluck, pull. Source: Websters Dictionary (01 Mar 1998) |
| tilorone | <chemical> 2,7-bis(2-(diethylamino)ethoxy)fluoren-9h-one. An antiviral agent used as its hydrochloride. It is the first recognised synthetic, low-molecular-weight compound that is an orally active interferon inducer, and is also reported to have antineoplastic and anti-inflammatory actions. Pharmacological action: anti-inflammatory agents, antineoplastic agent, antiviral agents, interferon inducers. Chemical name: 9H-Fluoren-9-one, 2,7-bis(2-(diethylamino)ethoxy)- (12 Dec 1998) |