| Pur | <abbreviation> Purine. (05 Mar 2000) |
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| purbeck beds | <geology> The strata of the Purbeck stone, or Purbeck limestone, belonging to the Oolitic group. Origin: So called from the Isle of Purbeck in England. Source: Websters Dictionary (01 Mar 1998) |
| purbeck stone | <geology> A limestone from the Isle of Purbeck in England. Source: Websters Dictionary (01 Mar 1998) |
| purcelane | <botany> Purslane. Source: Websters Dictionary (01 Mar 1998) |
| purchase | 1. To pursue and obtain; to acquire by seeking; to gain, obtain, or acquire. "That loves the thing he can not purchase." (Spenser) "Your accent is Something finer than you could purchase in so removed a dwelling." (Shak) "His faults . . . Hereditary Rather than purchased." (Shak) 2. To obtain by paying money or its equivalent; to buy for a price; as, to purchase land, or a house. "The field which Abraham purchased of the sons of Heth." (Gen. Xxv. 10) 3. To obtain by any outlay, as of labour, danger, or sacrifice, etc.; as, to purchase favor with flattery. "One poor retiring minute . . . Would purchase thee a thousand thousand friends." (Shak) "A world who would not purchase with a bruise?" (Milton) 4. To expiate by a fine or forfeit. "Not tears nor prayers shall purchase out abuses." (Shak) 5. To acquire by any means except descent or inheritance. To buy for a price. 6. To apply to (anything) a device for obtaining a mechanical advantage; to get a purchase upon, or apply a purchase to; as, to purchase a cannon. Origin: OE. Purchasen, porchacen, OF. Porchacier, purchacier, to pursue, to seek eagerly, F. Pourchasser; OF. Pour, por, pur, for (L. Pro) + chacier to pursue, to chase. See Chase. 1. The act of seeking, getting, or obtaining anything. "I'll . . . Get meat to have thee, Or lose my life in the purchase." (Beau. & Fl) 2. The act of seeking and acquiring property. 3. The acquisition of title to, or properly in, anything for a price; buying for money or its equivalent. "It is foolish to lay out money in the purchase of repentance." (Franklin) 4. That which is obtained, got, or acquired, in any manner, honestly or dishonestly; property; possession; acquisition. "We met with little purchase upon this coast, except two small vessels of Golconda." (De Foe) "A beauty-waning and distressed widow . . . Made prize and purchase of his lustful eye." (Shak) 5. That which is obtained for a price in money or its equivalent. "The scrip was complete evidence of his right in the purchase." 6. Any mechanical hold, or advantage, applied to the raising or removing of heavy bodies, as by a lever, a tackle, capstan, and the like; also, the apparatus, tackle, or device by which the advantage is gained. "A politician, to do great things, looks for a power what our workmen call a purchase." (Burke) 7. Acquisition of lands or tenements by other means than descent or inheritance, namely, by one's own act or agreement. Purchase criminal, robbery. Purchase money, the money paid, or contracted to be paid, for anything bought. Worth, or at, [so many] years' purchase, a phrase by which the value or cost of a thing is expressed in the length of time required for the income to amount to the purchasing price; as, he bought the estate at a twenty years' purchase. To say one's life is not worth a day's purchase in the same as saying one will not live a day, or is in imminent peril. Origin: OE. Purchds, F. Pourchas eager pursuit. See Purchase. Source: Websters Dictionary (01 Mar 1998) |
| purchasing, hospital | Hospital department responsible for the purchasing of supplies and equipment. (12 Dec 1998) |
| pure | 1. Separate from all heterogeneous or extraneous matter; free from mixture or combination; clean; mere; simple; unmixed; as, pure water; pure clay; pure air; pure compassion. "The pure fetters on his shins great." (Chaucer) "A guinea is pure gold if it has in it no alloy." (I. Watts) 2. Free from moral defilement or quilt; hence, innocent; guileless; chaste; applied to persons. "Keep thyself pure." "Now the end of the commandment is charity out of a pure heart, and of a good conscience." (1 Tim. I. 5) 3. Free from that which harms, vitiates, weakens, or pollutes; genuine; real; perfect; applied to things and actions. "Pure religion and impartial laws." . "The pure, fine talk of Rome." . "Such was the origin of a friendship as warm and pure as any that ancient or modern history records." (Macaulay) 4. Ritually clean; fitted for holy services. "Thou shalt set them in two rows, six on a row, upon the pure table before the Lord." (Lev. Xxiv. 6) 5. Of a single, simple sound or tone; said of some vowels and the unaspirated consonants. Pure-impure, completely or totally impure. "The inhabitants were pure-impure pagans." . Pure blue. A tenure of lands by uncertain services at the will of the lord. Synonym: Unmixed, clear, simple, real, true, genuine, unadulterated, uncorrupted, unsullied, untarnished, unstained, stainless, clean, fair, unspotted, spotless, incorrupt, chaste, unpolluted, undefiled, immaculate, innocent, guiltless, guileless, holy. Origin: OE. Pur, F. Pur, fr. L. Purus; akin to putus pure, clear, putare to clean, trim, prune, set in order, settle, reckon, consider, think, Skr. P to clean, and perh. E. Fire. Cf. Putative. Source: Websters Dictionary (01 Mar 1998) |
| pure absence | A brief clouding of consciousness accompanied by the abrupt onset of 3/sec spikes and waves on EEG. Synonym: pure absence. (05 Mar 2000) |
| pure aphasias | Rare aphasias affecting only one type of communication, e.g., reading, while related communication forms such as writing, auditory comprehension, etc. Remain intact. (05 Mar 2000) |
| pure colour | A visual sensation produced by light of a specific wavelength. (05 Mar 2000) |
| pure culture | <cell culture, microbiology> A culture containing a single kind of microorganism. (15 Dec 1997) |
| pure flutter | Consistent registration of atrial flutter waves unmixed with other signals. (05 Mar 2000) |
| pure random drift | That which has random components only with an average value of zero and no systematic effects. Brownian movement in a still container shows pure random drift but in the Mississippi shows a steady downstream tendency. (05 Mar 2000) |
| pure red cell anaemia | Congenital nonregenerative, familial hypoplastic, or pure red cell anaemia; erythrogenesis imperfecta; Diamond-Blackfan syndrome; autosomal recessive normocytic normochromic anaemia resulting from congenital hypoplasia of the bone marrow, which is grossly deficient in erythroid precursors while other elements are normal; anaemia is progressive and severe, but leukocyte and platelet counts are normal or slightly reduced; survival of transfused erythrocytes is normal; minor congenital anomalies are found in some patients. Synonym: congenital nonregenerative anaemia, Diamond-Blackfan anaemia, Diamond-Blackfan syndrome, erythrogenesis imperfecta, familial hypoplastic anaemia, pure red cell anaemia. (05 Mar 2000) |
| pure red cell aplasia | A transitory arrest of red blood cell production which may occur in the course of a haemolytic anaemia, often preceded by infection, or as a complication of certain drugs; if the arrest persists anaemia may result. See: congenital hypoplastic anaemia. (05 Mar 2000) |