| false masturbation | <psychiatry> Rarely used term for a nervous tic consisting of a constant pulling of the penis. Synonym: false masturbation, pseudomasturbation. Origin: G. Peos, penis, + tillo, to pull out (of hair), + mania, frenzy (05 Mar 2000) |
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| false membrane | <dermatology> A thick, tough fibrinous exudate on the surface of a mucous membrane or the skin, as seen in diphtheria. Synonym: croupous membrane, neomembrane, plica, pseudomembrane. (05 Mar 2000) |
| false mole | <gynaecology> An intrauterine polyp. (05 Mar 2000) |
| false negative | <statistics> A term used to indicate a test showed an incorrect negative result. (16 Dec 1997) |
| false-negative reaction | <statistics> An erroneous or mistakenly negative response. Negative test results in subjects who possess the attribute for which the test is conducted. The labeling of diseased persons as healthy when screening in the detection of disease. (05 Mar 2000) |
| false neuroma | traumatic neuroma |
| false nucleolus | <cell biology> The central portion of a cells nucleus that typically contains a glob of heterochromatin. Origin: Gr. Soma = body (09 Oct 1997) |
| false pain | <obstetrics> Ineffective uterine contractions, preceding and sometimes resembling true labour, but distinguishable from it by the lack of progressive effacement and dilation of the cervix. (05 Mar 2000) |
| false paracusis | <otolaryngology> The apparent increase in auditory acuity of a deaf person to conversation in noisy surroundings due to his companion unconsciously raising his voice. Synonym: Willis' paracusis. (05 Mar 2000) |
| false positive | <statistics> A test result that is read as positive when it is really negative. (27 Sep 1997) |
| false-positive reaction | <statistics> An erroneous or mistakenly positive response. Positive test results in subjects who do not possess the attribute for which the test is conducted. The labeling of healthy persons as diseased when screening in the detection of disease. (05 Mar 2000) |
| false pregnancy | <obstetrics, psychiatry> A condition in which some signs and symptoms suggest pregnancy, although the woman is not pregnant. Synonym: hysterical pregnancy, pseudocyesis, pseudopregnancy, spurious pregnancy. (05 Mar 2000) |
| false projection | <ophthalmology> The faulty visual sensation arising secondarily to underaction of an ocular muscle. Synonym: erroneous projection. (05 Mar 2000) |
| false rib | <anatomy> Five lower ribs on either side that do not articulate with the sternum directly. Synonym: costae spuriae, vertebrochondral ribs. (05 Mar 2000) |
| false ringbone | <veterinary> An exostosis on the middle or upper part of the long pastern bone in the horse. (05 Mar 2000) |