| ND | Doctor of Naturopathy; nasal deformity; natural death; Naval Dispensary; neonatal death; neoplastic ... |
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| NK | Commission on [Anatomical] Nomenclature [Ger. Nomenklatur Kommission]; natural killer [cell]; neurok... |
| NKCA | natural killer cell activity |
| NKCF | natural killer cytotoxic factor |
| NKSF | natural killer cell stimulatory factor |
| fish ladder | A series of descending weirs which carry water around a dam or waterfall to facilitate the upstream migration of fish. (09 Oct 1997) |
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| fish-mouth meatus | A red and swollen condition of the orifice of the urethra (urinary meatus) in gonorrhoea. Internal acoustic meatus, a canal running from the opening of the internal acoustic meatus, through the petrous portion of the temporal bone, ending at the fundus where a thin plate of bone separates it from the vestibule; it gives passage to the facial and vestibulocochlear nerves together with the labyrinthine artery and veins. Synonym: meatus acusticus internus, internal auditory meatus. (05 Mar 2000) |
| fish-mouth mitral stenosis | Extreme mitral stenosis. (05 Mar 2000) |
| fish-odour syndrome | <syndrome> An inborn error of metabolism associated with an offensive body odour, the smell of rotting fish, due to the excessive excretion of trimethylaminuria (TMA) in urine, sweat, and breath. Persons with TMA may experience tachycardia (fast heart rate) and severe hypertension (high blood pressure) after eating cheese (which contains tyramine) and after using nasal sprays containing epinephrine. TMA is caused by a mutation (change) in the gene for an enzyme, flavin-containing monooxygenase-3 (FMO3) encoded by a gene on chromosome 1. The FMO3 enzyme metabolises tyramine (which is in cheese). The syndrome is associated with various psychosocial reactions, including social isolation, clinical depression and attempted suicide. (12 Dec 1998) |
| fish oils | Oils high in unsaturated fats extracted from the bodies of fish or fish parts, especially the livers. Those from the liver are usually high in vitamin a. The oils are used as dietary supplements, in soaps and detergents, as protective coatings, and as a base for other food products such as vegetable shortenings. (12 Dec 1998) |
| fish poison | A toxic principle in certain fishes. Synonym: fish poison. Origin: ichthyo-+ G. Toxikon, poison (05 Mar 2000) |
| fish products | Food products manufactured from fish (e.g., fish flour, fish meal). (12 Dec 1998) |
| fish-tackle | A tackle or purchase used to raise the flukes of the anchor up to the gunwale. The block used is called the fish-block. Source: Websters Dictionary (01 Mar 1998) |
| fish-tail | Like the of a fish; acting, or producing something, like the tail of a fish. Fish-tail burner, a gas burner that gives a spreading flame shaped somewhat like the tail of a fish. Fish-tail propeller, a propeller with a single blade that oscillates like the tail of a fish when swimming. Source: Websters Dictionary (01 Mar 1998) |
| fish tapeworm anaemia | A rare form of macrocytic anaemia associated with Diphyllobothrium latum infection, especially in Finland. Synonym: fish tapeworm anaemia. (05 Mar 2000) |
| fish tapeworm infection | An infection caused by the fish tapeworm, Diphyllobothrium latum, one of the giant tapeworm species. Humans may get infected after eating undercooked fish that contain tapeworm larvae. Fish tapeworms are more common in cold, fresh water lakes such as the Great Lakes area. The adult worm grows in the intestine to lengths up to 30 feet. Segments of the worm and blood may occasionally be passed in the stools. Infection can also lead to vitamin B12 deficiency. Diagnosis is via microscopic examination of the stools. Treatment is with single dose niclosamide. (27 Sep 1997) |
| fish test | A reddish colouration (nuptial colouration) caused in certain male fishes (bitterling) by the injection of the gonad hormone. Synonym: fish test. (05 Mar 2000) |
| fish velocity | The velocity at the location occupied by a fish, measured at the fish's snout. (09 Oct 1997) |
| fish venoms | Venoms produced by fishes, including sharks and sting rays, usually delivered by spines. They contain various substances, including very labile toxins that affect the heart specifically and all muscles generally. (12 Dec 1998) |
| flying fish | <zoology> A fish which is able to leap from the water, and fly a considerable distance by means of its large and long pectoral fins. These fishes belong to several species of the genus Exocoetus, and are found in the warmer parts of all the oceans. Source: Websters Dictionary (01 Mar 1998) |