| franklinite | <chemical> A kind of mineral of the spinel group. Source: Websters Dictionary (01 Mar 1998) |
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| Frantzel's murmur | A murmur of mitral stenosis when louder at its beginning and end than in its midportion. (05 Mar 2000) |
| Fraser's syndrome | <syndrome> An association of cryptophthalmus with multiple anomalies, including middle and outer ear malformations, cleft palate, laryngeal deformity, displacement of umbilicus and nipples, digital malformations, separation of symphysis pubis, maldevelopment of kidneys, and masculinization of genitalia in females; autosomal recessive inheritance. Synonym: cryptophthalmus syndrome. (05 Mar 2000) |
| Fraser, Alexander | <person> Canadian pathologist, 1869-1939. See: Fraser-Lendrum stain for fibrin. (05 Mar 2000) |
| Fraser, G | <person> 20th century British geneticist. See: Fraser's syndrome. (05 Mar 2000) |
| Fraser-Lendrum stain | <technique> For fibrin, a multistaining procedure after Zenker's fixative in which fibrin, keratin, and some cytoplasmic granules appear red, erythrocytes appear orange, and collagen appears green. (05 Mar 2000) |
| frass | <ecology, entomology> Debris or excrement in water, produced by insects. (30 Mar 1998) |
| frater | A monk; also, a frater house. Frater house, an apartament in a convent used as an eating room; a refectory. Synonym: a fratery. Origin: L, a brother. Source: Websters Dictionary (01 Mar 1998) |
| fraternal twins | Fraternal twins are siblings who have shared a common uterine environment. They are due to fertilization of two different ova by different sperm. Fraternal twins are also called dizygotic twins. (12 Dec 1998) |
| fraternity | Origin: F. Fraternite, L. Fraternitas. 1. The state or quality of being fraternal or brotherly; brotherhood. 2. A body of men associated for their common interest, business, or pleasure; a company; a brotherhood; a society; in the Roman Catholic Chucrch, an association for special religious purposes, for relieving the sick and destitute, etc. 3. Men of the same class, profession, occupation, character, or tastes. "With what terms of respect knaves and sots will speak of their own fraternity!" (South) Source: Websters Dictionary (01 Mar 1998) |
| fraternization | The act of fraternizing or uniting as brothers. "I hope that no French fraternization . . . Could so change the hearts of Englishmen." (Burke) Source: Websters Dictionary (01 Mar 1998) |
| fraud | Exploitation through misrepresentation of the facts or concealment of the purposes of the exploiter. (12 Dec 1998) |
| Fraumeni, Joseph F Jr | <person> 20th century epidemiologist. See: Li-Fraumeni cancer syndrome. (05 Mar 2000) |
| fraunhofer lines | <physics> The lines of the spectrun; especially and properly, the dark lines of the solar spectrum, so called because first accurately observed and interpreted by Fraunhofer, a German physicist. Source: Websters Dictionary (01 Mar 1998) |
| Fraunhofer's lines | A number of the most prominent of the absorption line's of the solar spectrum. (05 Mar 2000) |