| SMI | Self-Motivation Inventory; senior medical investigator; severe mental impairment; silent myocardial ... |
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| SP | sacroposterior; sacrum to pubis; salivary progesterone; schizotypal personality; semi-private [room]... |
| CE | Constant Estrus |
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| SMI | Silent myocardial ischemia |
| SIR | Silent Information Regulator |
| SP | Silent Period |
| SCI | Silent cerebral infarction |
| postpartum estrus | <veterinary> Estrus with ovulation and corpus luteum production which occurs in some animals (e.g., the fur seal) immediately following the birth of the young. (05 Mar 2000) |
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| estrus | That portion or phase of the sexual cycle of female animals characterised by willingness to permit coitus; readily detectable behavioural and other signs are exhibited by animals during this period. Synonym: heat. Origin: G. Oistros, mad desire (05 Mar 2000) |
| estrus cycle | A reproductive cycle in some female mammals (but not female humans, who instead have menstrual cycles). The cycle is characterised by a short period of intense sexual desire (called estrus or heat) when the animal is fertile, which often occurs only once or twice a year, and involves correlating physical changes of the reproductive tract. (09 Oct 1997) |
| estrus detection | Methods for recognition of the state of estrus. (12 Dec 1998) |
| estrus synchronization | Occurrence or induction of estrus in all of the females in a group at the same time, applies only to animals. (12 Dec 1998) |
| masticatory silent period | A pause in electromyographic patterns associated with tooth contacts during chewing and biting; a part of the complex feedback mechanism of mandibular control involving receptors in the periodontal ligament and muscles. (05 Mar 2000) |
| silent | Producing no detectable signs or symptoms, said of certain diseases or morbid processes. (05 Mar 2000) |
| silent allele | 1. <genetics> A gene which is inactive. Thus, an amorphic gene. 2. <cell biology> Something that lacks a discernible shape and thus can be describes as amorphous. (05 Feb 1998) |
| silent area | Any area of the cerebrum or cerebellum in which lesions cause no definite sensory or motor symptoms. (05 Mar 2000) |
| silent electrode | In unipolar electrocardiography, a remote electrode placed either upon a single limb or connected with the central terminal and paired with an exploring electrode; the indifferent electrode is supposed to contribute little or nothing to the resulting record. Synonym: dispersing electrode, silent electrode. (05 Mar 2000) |
| silent gap | The period during which Korotkoff sounds indicating true systolic pressure fade away and reappear at a lower pressure point; responsible for errors made in recording falsely low systolic blood pressure, especially in hypertensive patients, of up to 25 mm Hg, and avoided by pumping the cuff 30 mm Hg beyond palpable systolic pressure. Synonym: silent gap. (05 Mar 2000) |
| silent ischemia | Myocardial ischemia without accompanying signs or symptoms of angina pectoris; can be detected by EKG and other lab techniques. See: silent myocardial infarction. (05 Mar 2000) |
| silent mutant | A mutant that is not phenotypically manifest. Synonym: silent mutant. (05 Mar 2000) |
| silent mutation | Mutations that have no effect on phenotype because they do not affect the activity of the product of the gene, usually because of codon ambiguity. (18 Nov 1997) |
| silent myocardial infarction | Infarction that produces none of the characteristic symptoms and signs of myocardial infarction. (05 Mar 2000) |
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