| pure tone audiogram | A chart of the threshold for hearing acuity at various frequencies usually expressed in decibels above normal threshold and usually covering frequencies from 128 to 8000 Hz. (05 Mar 2000) |
|---|---|
| pure-tone audiometer | An electroacoustical generator which produces pure tones of selected frequencies and calibrated output. (05 Mar 2000) |
| pure-tone audiometry | Audiometry utilizing tones of various frequencies and intensities as auditory stimuli to measure hearing, including comparisons of results from testing air conduction and bone conduction. (05 Mar 2000) |
| purebred | An animal whose ancestors on both sides have been members of a recognised breed, and usually officially registered as such. (05 Mar 2000) |
| puree | A dish made by boiling any article of food to a pulp and rubbing it through a sieve; as, a puree of fish, or of potatoes; especially, a soup the thickening of which is so treated. Origin: F. Source: Websters Dictionary (01 Mar 1998) |
| purgament | 1. That which is excreted; excretion. 2. <medicine> A cathartic; a purgative. Origin: L. Purgamentum offscourings, washings, expiatory sacrifice. See Purge. Source: Websters Dictionary (01 Mar 1998) |
| purgation | Evacuation of the bowels with the aid of a purgative or cathartic. Synonym: catharsis. Origin: L. Purgatio (05 Mar 2000) |
| purgative | 1. <pharmacology> Cathartic, causing evacuation of the bowels. 2. A cathartic, particularly one that stimulates peristaltic action. Origin: L. Purgativus (18 Nov 1997) |
| purgatory | A state or place of purification after death; according to the Roman Catholic creed, a place, or a state believed to exist after death, in which the souls of persons are purified by expiating such offenses committed in this life as do not merit eternal damnation, or in which they fully satisfy the justice of God for sins that have been forgiven. After this purgation from the impurities of sin, the souls are believed to be received into heaven. Origin: Cf. F. Purgatoire. Source: Websters Dictionary (01 Mar 1998) |
| purge | 1. To cleanse, clear, or purify by separating and carrying off whatever is impure, heterogeneous, foreign, or superfluous. "Till fire purge all things new." 2. <medicine> To operate on as, or by means of, a cathartic medicine, or in a similar manner. 3. To clarify; to defecate, as liquors. 4. To clear of sediment, as a boiler, or of air, as a steam pipe, by driving off or permitting escape. 5. To clear from guilt, or from moral or ceremonial defilement; as, to purge one of guilt or crime. "When that he hath purged you from sin." (Chaucer) "Purge me with hyssop, and I shall be clean." (Ps. Li. 7) 6. To clear from accusation, or the charge of a crime or misdemeanor, as by oath or in ordeal. 7. To remove in cleansing; to deterge; to wash away; often followed by away. "Purge away our sins, for thy name's sake." (Ps. Lxxix. 9) "We 'll join our cares to purge away Our country's crimes." (Addison) Origin: F. Purger, L. Purgare; purus pure + agere to make, to do. See Pure, and Agent. 1. The act of purging. "The preparative for the purge of paganism of the kingdom of Northumberland." (Fuller) 2. That which purges; especially, a medicine that evacuates the intestines; a cathartic. Origin: Cf. F. Purge. See Purge. Source: Websters Dictionary (01 Mar 1998) |
| purger | One who, or that which, purges or cleanses; especially, a cathartic medicine. Source: Websters Dictionary (01 Mar 1998) |
| purging | <haematology, procedure> Process by which certain types of cells are removed from bone marrow prior to infusion into the patient. In autologous transplantation, marrow may be purged to remove lingering cancerous cells. In allogeneic transplantation, the donor bone marrow may be purged to remove cells that cause graft-versus-host disease. (16 Dec 1997) |
| purging cassia | The dried ripe fruit of Cassia fistula, used as a laxative. Synonym: purging cassia. (05 Mar 2000) |
| puri | <chemistry> See Euxanthin. Source: Websters Dictionary (01 Mar 1998) |
| purification | <chemistry> A central part of downstream processing. Large-scale purification methods are used to take a crude fermentation supernatant or cell homogenate and isolate the product from it in a fairly pure form. (14 Dec 1997) |