| Dukes' classification | A classification of the extent of operable adenocarcinoma of the colon or rectum commonly modified as follows: A (Duke's A), confined to the mucosa; B1, into the muscularis mucosae; B2, through the muscularis mucosae; C1, limited to the bowel wall, with nodal metastases; C2, through the bowel wall, with nodal metastases. (05 Mar 2000) |
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| Dukes' disease | An exanthem-producing infectious disease of childhood; unknown aetiology. (05 Mar 2000) |
| Dukes, Clement | <person> English physician, 1845-1925. See: Dukes' disease, Filatov Dukes' disease. (05 Mar 2000) |
| Dukes, Cuthbert | <person> British pathologist, 1890-1977. See: Dukes' classification. (05 Mar 2000) |
| dulcamara | <botany> A plant (Solanum Dulcamara). See Bittersweet. 3 . Origin: NL, fr. L. Dulcis sweet + amarus bitter. Source: Websters Dictionary (01 Mar 1998) |
| dulcamarin | <chemistry> A glucoside extracted from the bittersweet (Solanum Dulcamara), as a yellow amorphous substance. It probably occasions the compound taste. See Bittersweet. Source: Websters Dictionary (01 Mar 1998) |
| dulcified | Sweetened; mollified. Dulcified spirit or spirits, a compound of alcohol with mineral acids; as, dulcified spirits of niter. Source: Websters Dictionary (01 Mar 1998) |
| dulcify | 1. <pharmacology> To sweeten; to free from acidity, saltness, or acrimony. 2. To mollify; to sweeten; to please. "As she . . . Was further dulcified by her pipe of tobacco." (Hawthorne) Origin: L. Dulcis sweet + -fy: cf. F. Dulcifier. Source: Websters Dictionary (01 Mar 1998) |
| dulcin | P-Phenetol carbamide; 4-ethoxyphenylurea;has been used as a substitute for sugar, being 200 times as sweet as cane sugar. Because of hydrolysis to aminophenol, it may produce an injurious effect when used over long periods of time. (05 Mar 2000) |
| dulcinea | A mistress; a sweetheart. "I must ever have some Dulcinea in my head." (Sterne) Origin: Sp, from Dulcinea del Toboso the mistress of the affections of Don Quixote. Source: Websters Dictionary (01 Mar 1998) |
| dulcite | <chemistry> A white, sugarlike substance, C6H8.(OH)2, occurring naturally in a manna from Madagascar, and in certain plants, and produced artificially by the reduction of galactose and lactose or milk sugar. Origin: Cf. F. Dulcite, fr. L. Dulcis sweet. Source: Websters Dictionary (01 Mar 1998) |
| dulia | An inferior kind of veneration or worship, given to the angels and saints as the servants of God. Origin: LL, fr. Gr. Servitude, fr. Slave. Source: Websters Dictionary (01 Mar 1998) |
| dull | 1. Slow of understanding; wanting readiness of apprehension; stupid; doltish; blockish. "Dull at classical learning." "She is not bred so dull but she can learn." (Shak) 2. Slow in action; sluggish; unready; awkward. "This people's heart is waxed gross, and their ears are dull of hearing." (Matt. Xiii. 15) "O, help my weak wit and sharpen my dull tongue." (Spenser) 3. Insensible; unfeeling. "Think me not So dull a devil to forget the loss Of such a matchless wife." (Beau. & Fl) 4. Not keen in edge or point; lacking sharpness; blunt. "Thy scythe is dull." 5. Not bright or clear to the eye; wanting in liveliness of colour or luster; not vivid; obscure; dim; as, a dull fire or lamp; a dull red or yellow; a dull mirror. 6. Heavy; gross; cloggy; insensible; spiritless; lifeless; inert. "The dull earth." "As turning the logs will make a dull fire burn, so changes of study a dull brain." (Longfellow) 7. Furnishing little delight, spirit, or variety; uninteresting; tedious; cheerless; gloomy; melancholy; depressing; as, a dull story or sermon; a dull occupation or period; hence, cloudy; overcast; as, a dull day. "Along life's dullest, dreariest walk." (Keble) Synonym: Lifeless, inanimate, dead, stupid, doltish, heavy, sluggish, sleepy, drowsy, gross, cheerless, tedious, irksome, dismal, dreary, clouded, tarnished, obtuse. See Lifeless. Origin: AS. Dol foolish; akin to gedwelan to err, D. Dol mad, dwalen to wander, err, G. Toll mad, Goth. Dwals foolish, stupid, cf. Gr. Turbid, troubled, Skr. Dhvr to cause to fall. Cf. Dolt, Dwale, Dwell, Fraud. Source: Websters Dictionary (01 Mar 1998) |
| dullness | Dulness The character of the sound obtained by percussing over a solid part incapable of resonating; usually applied to an area containing less air than those which can resonate. (05 Mar 2000) |
| Dulong, Pierre | <person> French chemist, 1785-1838. See: Dulong-Petit law. (05 Mar 2000) |