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fretum

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(frē′tŭm) [L.] A constriction.

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Freud, Sigmund

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(froyd) Austrian neurologist and psychoanalyst, 1856–1939. Freud hoped to help patients explore unacknowledged thoughts and feelings and thereby improve self-awareness. SEE: psychoanalysis.

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Freudian

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(froyd′ē-ăn) 1. Pert. to Sigmund Freud's psychoanalytic theories or practice. 2. One who follows Freud's psychoanalytic theories or practices, esp. a psychoanalyst. SEE: under Freud, Sigmund.

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Freudian slip

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(froyd′ē-ăn) A mistake in speaking or writing that is thought to provide insight into the individual's unconscious thoughts, motives, or wishes.

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Freund, Jules Thomas

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(froynd) Hungarian-born U.S. immunologist, 1890–1960.

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F. adjuvant A mixture of killed microorganisms, usually mycobacteria, in an oil and water emulsion. The material is administered to induce antibody formation. Because the oil retards absorption of the mixture, the antibody response is much greater than if the killed microorganisms were administered alone.

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Frey syndrome

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(frī) [Lucja Frey, Polish neurologist, 1899–1944] Sweating and/or flushing of the skin overlying the parotid gland that occurs after chewing or eating a meal. It is seen most often after parotid gland surgery but may also accompany traumatic injuries to the face and other conditions. SYN: auriculotemporal syndrome.

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friable

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(frī′ă-bĕl) [L. friare, to crumble] Easily broken, crumbled, or pulverized.

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fricative

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(frik′ăt-iv) [L. fricare, to rub] A consonant produced by forcing air through a narrow space in the mouth. Fricatives in English include f, v; s, z and the th in thin and then.

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Fricke bandage

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A special bandage for supporting and immobilizing the scrotum.

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friction

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(frik′shŏn) [L. fricare, to rub] 1. Rubbing. 2. A massage technique in which one surface is rubbed over another, e.g., the skin over muscle. Both compressive and shearing forces are involved. Types of friction include warming, rolling, wringing, linear, stripping, cross-fiber, chucking, and circular. Most types of friction are performed with little or no lubricant. 3. Any force resisting motion that is generated when two surfaces move with respect to each other.

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friction rub

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The distinct sound heard when two dry surfaces are rubbed together. If the sound is loud enough, the condition producing the sound can also be felt.

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pericardial f.r. SEE: under rub.

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pleural f.r. SEE: under rub.

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Friedewald equation

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An indirect method of determining the level of low-density lipoprotein (LDL) cholesterol in a sample of blood. The formula is: LDL-cholesterol = total cholesterol - high-density lipoprotein (HDL)-cholesterol − (triglycerides/5).

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Friedländer, Carl

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(frēt′len″dĕr, frēd′) Ger. pathologist, 1847–1887.

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