| AF | abnormal frequency; acid-fast; adult female; afebrile; aflatoxin; albumin-free; albumose-free; aldeh... |
|---|---|
| FFF | degree of fineness of abrasive particles; field-flow fractionation; flicker fusion frequency |
| FFT | fast Fourier transform; flicker fusion test or threshold |
| FIT | fluorescein isothiocyanate; fusion inferred threshold |
| FP | false positive; family physician; family planning; family practice; family practitioner; Fanconi pan... |
| latent infection | An asymptomatic infection capable of manifesting symptoms under particular circumstances or if activated. (05 Mar 2000) |
|---|---|
| latent learning | That learning which is not evident to the observer at the time it occurs, but which is inferred from later performance in which learning is more rapid than would be expected without the earlier experience. (05 Mar 2000) |
| latent microbism | The presence of pathogenic microorganisms in the body that elicit no symptoms; the condition of a pathogen carrier. (05 Mar 2000) |
| latent nystagmus | Jerky nystagmus that is brought out by covering one eye. The fast phase is always away from the covered eye. (05 Mar 2000) |
| latent period | A seemingly inactive period, as that between exposure of tissue to an injurious agent and the manifestation of response or that between the instant of stimulation and the beginning of response. (18 Nov 1997) |
| latent rat virus | A virus of the genus Parvovirus causing inapparent infection in rats; also recoverable from rat tumours. Synonym: latent rat virus. (05 Mar 2000) |
| latent reflex | A reflex which must be considered normal but which usually appears only under some pathologic circumstance that lowers its threshold. (05 Mar 2000) |
| latent schizophrenia | A preexisting susceptibility for developing overt schizophrenia under strong emotional stress. (05 Mar 2000) |
| latent stage | incubation period |
| latent syphilis | Infection with Treponema pallidum, after the manifestations of primary and secondary syphilis have subsided (or were never noticed), before any manifestations of tertiary syphilis have appeared. (05 Mar 2000) |
| latent tetany | A rather vague disorder recognised more in Europe than in the U.S. Consisting of a number of non-specific complaints, including generalised weakness, hand and foot cramping, distal paresthesia, anxiety, and depression. Some think it is a "normocalcaemic tetany"; others consider it "chronic hyperventilation syndrome." Typically with certain provoking procedures (e.g., limb ischemia, hyperventilation) in which case, obvious tetany develops. See: Trousseau's sign, Chvostek's sign, Erb sign. Synonym: crytotetany, spasmophilia. (05 Mar 2000) |
| latent typhoid | walking typhoid |
| latent virus | <virology> Virus integrated within host genome but inactive: may be reactivated by stress such as ultraviolet irradiation. (18 Nov 1997) |
| latent zone | That portion of the cerebral cortex, the stimulation of which produces no movement and a lesion of which produces no symptoms; mainly the more anterior areas of the frontal lobes. (05 Mar 2000) |
| atrial fusion beat | A beat that occurs when the atria are activated in part by the sinus impulse and in part by an ectopic or retrograde impulse from A-V junction or ventricle. (05 Mar 2000) |