| Folin's reagent | The reaction of amino acids in alkaline solution with 1,2-naphthoquinone-4-sulfonate (Folin's reagent) to yield a red colour; useful for quantitative assay. Synonym: Folin's reagent. (05 Mar 2000) |
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| Folin's test | A quantitative test for uric acid by means of the colour produced with phosphotungstic acid and a base; a quantitative test for urea; the urea is decomposed by boiling with magnesium chloride, and the freed ammonia is measured. (05 Mar 2000) |
| Folin, Otto | <person> U.S. Biochemist, 1867-1934. See: Folin's reaction, Folin's test, Folin-Looney test. (05 Mar 2000) |
| Folin-Looney test | A test for tyrosine that gives a blue colour in alkaline solution with a reagent consisting of sodium tungstate, phosphomolybdic acid, and phosphoric acid. (05 Mar 2000) |
| folinate | A salt or ester of folinic acid. (05 Mar 2000) |
| folinic acid | N5Formyl-5,6,7,8-tetrahydrofolic acid;the active form of folic acid which acts as a formyl group carrier in transformylation reactions; the calcium salt, leucovorin calcium, has therapeutic use. Synonym: citrovorum factor, leucovorin. (05 Mar 2000) |
| folio | Origin: Ablative of L. Folium leaf. See 4th Foil. 1. A leaf of a book or manuscript. 2. A sheet of paper once folded. 3. A book made of sheets of paper each folded once (four pages to the sheet); hence, a book of the largest kind. See Note under Paper. 4. The page number. The even folios are on the left-hand pages and the odd folios on the right-hand. 5. A page of a book; a page in an account book; sometimes, two opposite pages bearing the same serial number. 6. A leaf containing a certain number of words, hence, a certain number of words in a writing, as in England, in law proceedings 72, and in chancery, 90; in new York, 100 words. Folio post, a flat writing paper, usually 17 by 24 inches. Source: Websters Dictionary (01 Mar 1998) |
| foliole | <botany> One of the distinct parts of a compound leaf; a leaflet. Origin: Dim. Of L. Folium leaf: cf. F. Foliole. Source: Websters Dictionary (01 Mar 1998) |
| foliose | <botany> Having many leaves; leafy. Origin: L. Foliosus, fr. Folium leaf. Source: Websters Dictionary (01 Mar 1998) |
| folious | 1. Like a leaf; thin; unsubstantial. 2. <botany> Foliose. See: Foliose. Source: Websters Dictionary (01 Mar 1998) |
| folium | Origin: L, a leaf. 1. A leaf, especially. A thin leaf or plate. 2. <geometry> A curve of the third order, consisting of two infinite branches, which have a common asymptote. The curve has a double point, and a leaf-shaped loop; whence the name. Its equation is x^3 + y^3 = axy. Source: Websters Dictionary (01 Mar 1998) |
| folium vermis | A small posterior subdivision of the superior vermis of the cerebellum. Synonym: folium vermis. (05 Mar 2000) |
| folk medicine | Treatment of ailments outside of organised medicine by remedies and simple measures based upon experience and knowledge handed on from generation to generation. (05 Mar 2000) |
| folklore | The common orally transmitted traditions, myths, festivals, songs, superstitions, and stories of all peoples. (12 Dec 1998) |
| Folli's process | A slender spur running anteriorward from the neck of the malleus toward the petrotympanic fissure. Synonym: processus anterior mallei, Folli's process, follian process, long process of malleus, processus gracilis, processus ravii, Rau's process, Ravius' process, slender process of malleus. (05 Mar 2000) |