| fla 63 | <chemical> Bis[(3-methyl-1-imidazolidinyl)thiocarbonyl]disulfide. An inhibitor of the last step of noradrenaline biosynthesis. Synonym: bis(4-methyl-1-homopiperazinyl)thiuram disulfide. Chemical name: 1H-1,4-Diazepine, 1,1'-(dithiodicarbonothioyl)bis(hexahydro-4-methyl- (12 Dec 1998) |
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| flabellate | Fan-shaped. (09 Oct 1997) |
| flabellinerved | <botany> Having many nerves diverging radiately from the base; said of a leaf. Origin: L. Flabellum a fan + E. Nerve. Source: Websters Dictionary (01 Mar 1998) |
| flabellum | A fan; especially, the fan carried before the pope on state occasions, made in ostrich and peacock feathers. Origin: L. See Flabel. Source: Websters Dictionary (01 Mar 1998) |
| flaccid | Weak, lax and soft. Origin: L. Flaccidus (18 Nov 1997) |
| flaccid ectropion | Ectropion of the lower eyelid following paralysis of the orbicularis oculi muscle. Synonym: flaccid ectropion, paralytic ectropion. (05 Mar 2000) |
| flaccid membrane | Triangular loose part of tympanic membrane between the malleolar folds. Synonym: pars flaccida membranae tympani, flaccid membrane, membrana flaccida, Rivinus' membrane, Shrapnell's membrane. (05 Mar 2000) |
| flaccid paralysis | Paralysis with a loss of muscle tone. Compare: spastic diplegia. (05 Mar 2000) |
| flaccid part of tympanic membrane | Triangular loose part of tympanic membrane between the malleolar folds. Synonym: pars flaccida membranae tympani, flaccid membrane, membrana flaccida, Rivinus' membrane, Shrapnell's membrane. (05 Mar 2000) |
| flaccidity | The condition or state of being flaccid. (05 Mar 2000) |
| Flack's node | sinoatrial node |
| Flack, Martin | <person> British physiologist, 1882-1931. See: Flack's node, Keith and Flack node. (05 Mar 2000) |
| flag | 1. That which flags or hangs down loosely. 2. A cloth usually bearing a device or devices and used to indicate nationality, party, etc, or to give or ask information; commonly attached to a staff to be waved by the wind; a standard; a banner; an ensign; the colours; as, the national flag; a military or a naval flag. 3. <zoology> A group of feathers on the lower part of the legs of certain hawks, owls, etc. A group of elongated wing feathers in certain hawks. The bushy tail of a dog, as of a setter. Black flag. See Black. Flag captain, Flag leutenant, etc, special officers attached to the flagship, as aids to the flag officer. Flag officer, the commander of a fleet or squadron; an admiral, or commodore. Flag of truse, a white flag carried or displayed to an enemy, as an invitation to conference, or for the purpose of making some communication not hostile. Flag share, the flag officer's share of prize money. Flag station, a station at which trains do not stop unless signaled to do so, by a flag hung out or waved. National flag, a flag of a particular country, on which some national emblem or device, is emblazoned. Red flag, a flag of a red colour, displayed as a signal of danger or token of defiance; the emblem of anarchists. To dip, the flag, to mlower it and quickly restore it to its place; done as a mark of respect. To hang out the white flag, to ask truce or quarter, or, in some cases, to manifest a friendly design by exhibiting a white flag. To hang the flag half-mast high or half-staff, to raise it only half way to the mast or staff, as a token or sign of mourning. To strike, or lower, the flag, to haul it down, in token of respect, submission, or, in an engagement, of surrender. Yellow flag, the quarantine flag of all nations; also carried at a vessel's fore, to denote that an infectious disease is on board. Origin: Cf. LG. & G. Flagge, Sw. Flagg, Dan. Flag, D. Vlag. See Flag to hang loose. <botany> An aquatic plant, with long, ensiform leaves, belonging to either of the genera Iris and Acorus. Cooper's flag, the cat-tail (Typha latifolia), the long leaves of which are placed between the staves of barrels to make the latter water-tight. Corn flag. See Corn. Flag broom, a coarse of broom, originally made of flags or rushes. Flag root, the root of the sweet flag. Sweet flag. See Calamus. Origin: From Flag to hang loose, to bend down. 1. A flat stone used for paving. 2. <geology> Any hard, evenly stratified sandstone, which splits into layers suitable for flagstones. Origin: Icel. Flaga, cf. Icel. Flag spot where a turf has been cut out, and E. Flake layer, scale. Cf. Floe. Source: Websters Dictionary (01 Mar 1998) |
| flag flap | A flag-shaped flap on a proximal pedicle, transferred from one surface to another of the same finger or from one finger to an adjacent finger. (05 Mar 2000) |
| flag sign | <clinical sign> Bands of discoloration of hair (reddish, blonde, or gray, depending on original colour) resulting from fluctuations in nutrition characteristic of kwashiorkor and in diseases of protein depletion such as ulcerative colitis. (05 Mar 2000) |