FLUIGRAM 



480 



FCENICULUM 



endolymph. F. Vein, the name given to the eddies 

 produced in a cavity of the heart by regurgitating blood 

 coming in contact with the current entering the cavity in 

 the normal direction. The oscillation of the particles 

 of blood are attended with a blowing sound or murmur. 



Fluigram (Jloo / -e-gram) [fluidus, fluid ; ypafifia, a 

 small weight]. In medicine and pharmacy the gram 

 and the cubic centimeter are the most important metric 

 units, and to express their close relationship the cubic 

 centimeter has been very appropriately termed a Flui- 

 gram. 



Fluke or F.-worm {flak) [ME., floke, a fluke]. Any 

 trematode worm ; especially Distoma kepaticum, q. v. 

 See Trematodes, and Parasites {Animal) , Table of. 



Fluor {flu' -or) [L., a flow]. I. A liquid state. 2. 

 The menstrual flux. F. albus, white flow ; an old 

 name for Leukorrhea. F. muliebris. Synonym of 

 Leukorrhea. 



Fluoranthene {flu-or-an' -then) \Jluor, a flow], C 15 H 10 . 

 Idryl ; a substance that occurs in the " stubb-fat ob- 

 tained from the distillation of the " stubb. " It crys- 

 tallizes from alcohol in needles or plates, melting at 

 109-1 io° C. , and dissolves readily in hot alcohol, ether, 

 and carbon disulphid. 



Fluorene {flu-or-en') [fluor, a flow], C 13 H 10 . A sub- 

 stance found in coal-tar ; it can be obtained by passing 

 diphenylmethane through a combustion-tube heated 

 to redness. It is very soluble in hot alcohol, less so 

 in cold alcohol ; it crystallizes in colorless plates having 

 a violet fluorescence, melts at 113° C, and boils at 

 295° C. 



Fluorescein {flu-or-es' -e-in) [Jluor, a flow], C 20 H 12 O 5 - 

 + H 2 0. Resorcinol-phthalein. An anhydrid of re- 

 sorcin, prepared by heating phthalic anhydrid with 

 resorcinol to 200 C. It occurs as a yellowish or dark- 

 red powder decomposing at about 290 C. From it 

 are derived the eosin coloring-matters, q. v. 



Fluorescence {flu-or-es' -ens) [fluere, to flow]. A 

 property possessed by certain substances, consisting in 

 the emission of colors while light is being passed 

 through them. Quinin, fluorspar, and several struct- 

 ures of the eye, possess this power. See also Phos- 

 phorescence. 



Fluorescent Resorcinol. Same as Resorcin Blue. 



Fluorescigenous {flu-or-es-i/ -en-us) \_fluere, to flow ; 

 yzvvav, to produce]. Giving rise to fluorescence. 



Fluorescin {flu-or-es' -in) \_fluere, to flow], C 20 H u O 5 . 

 A colorless amorphous product of the reduction of 

 fluorescein. On account of its neutral quality and 

 green fluorescence, it has been used to study the 

 movements of the intraocular fluids. 



Fluorid {flu' -or-id) [fluere, to flow]. A basic salt of 

 fluorin. 



Fluorin {flu' -or-in)[ fluor, a flow]. F=I9; quantival- 

 encei. One of the elements. It has not been isolated, 

 but is probably a gas. All its salts are highly corro- 

 sive and poisonous in their full strength. See Ele- 

 ments, Table of. Ammonium fluorid is recommended 

 by Lucas for hypertrophy of the spleen. Dose n^v of 

 a gr. iv to 3; j solution. Unof. Hydrofluoric acid, 

 is an antiseptic and antiferment. Inhalations of the 

 dilute vapor have been recommended in diphtheria 

 and tuberculosis. 



Fluorindenes {flu-or-in'-dtnz) [fluor, a flow]. A 

 series of dye-stuffs closely allied to the indulins. They 

 are produced by the protracted heating of azophenin 

 or amidophenazin, alone or with orthodiamins. They 

 dissolve in alcohol with beautiful fluorescence and 

 form greenish-blue fluorescent salts. 



Fluoroform {flu-or' -o- form) [fluor, a flow ; forma, 

 form], CHF 3 . A gas, the fluorin analogue of chloro- 

 form. 



Fluoroscope {flu-or' -os-kop) [fluere, to flow ; zxotteZv, 

 to examine]. The instrument for holding the fluor- 

 escent screen in X-ray examination. 



Fluoroscopy [flu-or-os' -ko-pe) \_fluere, to flow ; okokeIv, 

 to examine]. The process of inspecting the tissues 

 by means of a fluorescent screen. 



Flush [origin obscure]. A temporary redness, as the 

 hectic flush, sometimes due to vasomotor paresis. 



Flushing {flush' -ing) [origin obscure]. I. A frequent 

 symptom in the subjects of cardiac palpitation, and 

 especially in Graves' disease. It implies a condition 

 of vaso-motor irritability with a paresis of the arte- 

 rioles in certain areas. It is often accompanied by 

 local perspiration. It is seldom a marked symptom of 

 organic disease. 2. The process of cleansing by a 

 rapid flow of liquid. 



Flux (fluhs) [fluxus, flowing]. I. An abnormal flow of 

 any of the excretions of the body, especially the feces. 

 Also, a synonym of Dysentery. 2. In chemistry, 

 any highly-fusible substance or mixture, as the sub- 

 borate of soda, employed in the fusion of metals. F., 

 Sebaceous. See Seborrhea. 



Fluxion {fluk'-shun) [fluxus, a flowing]. A gathering 

 of blood or other fluid in one part of the body ; con- 

 gestion, or hyperemia. 



Fluxus {fluks'-us) [L.]. A flow or a flowing. F. 

 cruentus. Synonym of Dysentery. F. dysenteri- 

 cus. Synonym of Dysentery. F. sebaceus. Syn- 

 onym of Seborrhea. F. splenicus. Synonym of 

 Melena. F. torminosus. Synonym of Dysentery. 



Fly {fli) [ME., fllye, a fly]. A dipterous insect. For 

 parasitic flies, see Parasites {Animal), Table of. F.- 

 agaric. See Agaricus muscarius . F. - blister, 

 Flying Blister. See Blister. F. -poison. See 

 Amianthium. F. -sickness. See Barcoo. 



Focal {fo'-kal) [focus, a point; a fire-place]. Pertain- 

 ing to or occupying a focus. F. Disease. See Disease. 

 F. Hemorrhage, localized hemorrhage, in contradis- 

 tinction to diffuse or disseminated hemorrhage. F. 

 Meningitis, meningitis involving but a small area of 

 the membranes. F. Myelitis, localized myelitis, in 

 contradistinction to diffuse or disseminated myelitis. 

 F. Sclerosis, the chronic form, sometimes called 

 Sclerotic Myelitis. 



Focil {fo'-sil) [focile, a spindle]. Any bone of the 

 forearm or leg. F. majus, the ulna. F. majus 

 cruris, the tibia. F. minus, the radius. F. minus 

 cruris, the fibula. 



Focus {fo'-kus) [focus, a point: pl.,foci\. The prin- 

 cipal seat of a disease. The point (called principal 

 focus) to which converge the rays of light that 

 pass dirough a convex lens or are reflected from a 

 concave mirror. F., Equivalent, in microscopy, when 

 the real image of an objective of a certain focal length 

 is of the same size as that produced by a simple con- 

 verging lens whose focal distance equals that of the ob- 

 jective, it is said to have an equivalent focus. F., 

 Negative, or Virtual, the imaginary focus of an object 

 placed within the principal focus. Conjugate Foci, 

 interdependent foci. 



Focusing {fo' -kus-ing) [focus, a point]. The mutual 

 arrangement of an object and the optic parts of a 

 microscope so that a clear image may be seen. F. 

 Down, in microscopy, focusing by moving the objective 

 down or toward the object, but at the risk of damag- 

 ing it. F. Up, focusing by moving the objective up 

 or away from the object. 



Fodere's Test. See Birth. 



Fceniculum {fen-ik' -u-lum) [L.: gen., Farniculi]. 

 Fennel. The fruit of F. vulgare, with properties due 

 to a volatile oil. It is a mild stimulant and aromatic 

 carminative. F., Aq., 2 parts of the oil in 1000 of 



