impressiones digitatae |
The depressions on the inner surface of the skull which correspond to the convolutions of the brain. Synonym: impressiones digitatae, digitate impressions. (05 Mar 2000) |
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impressions |
<dentistry> The first step in making a model of your teeth. You bite into a container filled with algenate, and the algenate hardens to produce a mold of your teeth. (05 Mar 2000) |
impressions for cerebral gyri |
The depressions on the inner surface of the skull which correspond to the convolutions of the brain. Synonym: impressiones digitatae, digitate impressions. (05 Mar 2000) |
impressions of oesophagus |
Three narrowings of the oesophagus normally demonstrated radiographically following a barium swallow: the upper or pharyngeal oesophageal constriction, at the beginning of the oesophagus, is caused by the cricopharyngeus muscle, often referred to as the superior oesophageal sphincter; the middle or aortic constriction is a left-sided narrowing due to the oesophagus passing the aortic arch; the inferior or diaphragmatic oesophageal constriction corresponds to the passage of the oesophagus through the oesophageal hiatus of the diaphragm. Synonym: impressions of oesophagus. (05 Mar 2000) |
impressive aphasia |
Aphasia in which there is impairment in the comprehension of spoken and written words, associated with effortless, articulated, but paraphrasic, speech and writing; malformed words, substitute words, and enologisms are charcteristic. When severe, and speech is incomprehensible, it is called jargon aphasia. The patient often appears unaware of his deficit. Synonym: fluent aphasia, impressive aphasia, posterior aphasia, psychosensory aphasia, receptive aphasia, Wernicke's aphasia. (05 Mar 2000) |
impressment |
The act of seizing for public use, or of impressing into public service; compulsion to serve; as, the impressment of provisions or of sailors. "The great scandal of our naval service impressment died a protracted death." (J. H. Burton) Source: Websters Dictionary (01 Mar 1998) |
impressure |
Dent; impression. Origin: Cf. OF. Impressure, LL. Impressura. Source: Websters Dictionary (01 Mar 1998) |
imprint |
1. To impress; to mark by pressure; to indent; to stamp. "And sees his num'rous herds imprint her sands." (Prior) 2. To stamp or mark, as letters on paper, by means of type, plates, stamps, or the like; to print the mark (figures, letters, etc, upon something). "Nature imprints upon whate'er we see, That has a heart and life in it, "Be free."" (Cowper) 3. To fix indelibly or permanently, as in the mind or memory; to impress. "Ideas of those two different things distinctly imprinted on his mind." (Locke) Origin: OE. Emprenten, F. Empreint, p. P. Of empreindre to imprint, fr. L. Imprimere to impres, imprint. See 1st In-, Print, and cf. Impress. Source: Websters Dictionary (01 Mar 1998) |
imprinting |
1. <genetics> A remarkable genetic phenomenon. The gist is that gene expression depends on the sex of the transmitting parent. There is, for example, increased severity of neurofibromatosis when the gene for it came from the mother. 2. <psychology> A particular kind of learning characterised by occurrence in very early life, rapidity of acquisition, and relative insusceptibility to forgetting or extinction. Imprinted behaviour includes most (or all) behaviour commonly called instinctive, but imprinting is used purely descriptively. (04 Jul 1999) |
impromidine |
<chemical> N-(3-(1h-imidazol-4-yl)propyl)-n'-(2-(((5-methyl-1h-imidazol-4-yl)methyl)thio)ethyl)guanidine. A highly potent and specific histamine h2 receptor agonist. It has been used diagnostically as a gastric secretion indicator. Pharmacological action: histamine agonist. Chemical name: Guanidine, N-(3-(1H-imidazol-4-yl)propyl)-N'-(2-(((5-methyl-1H-imidazol-4-yl)methyl)thio)ethyl)- (12 Dec 1998) |
improper |
1. Not proper; not suitable; not fitted to the circumstances, design, or end; unfit; not becoming; incongruous; inappropriate; indecent; as, an improper medicine; improper thought, behavior, language, dress. "Follow'd his enemy king, and did him service, Improper for a slave." (Shak) "And to their proper operation still, Ascribe all Good; to their improper, Ill." (Pope) 2. Not peculiar or appropriate to individuals; general; common. "Not to be adorned with any art but such improper ones as nature is said to bestow, as singing and poetry." (J. Fletcher) 3. Not according to facts; inaccurate; erroneous. Improper diphthong. See Diphthong. Improper feud, an originalfeud, not earned by military service. Mozley & W. Improper fraction. See Fraction. Origin: F. Impropre, L. Improprius; pref. Im- not + proprius proper. See Proper. Source: Websters Dictionary (01 Mar 1998) |
improperia |
A series of antiphons and responses, expressing the sorrowful remonstrance of our Lord with his people; sung on the morning of the Good Friday in place of the usual daily Mass of the Roman ritual. Origin: L, reproaches. Source: Websters Dictionary (01 Mar 1998) |
impropriatrix |
A female impropriator. Source: Websters Dictionary (01 Mar 1998) |
improvision |
Improvidence. Origin: Pref. Im- not + provision. Source: Websters Dictionary (01 Mar 1998) |
improvvisatrice |
Origin: It. See Improvise. A female improvvisatore. Alternative forms: improvisatrice. Source: Websters Dictionary (01 Mar 1998) |