| ECG | Electro-Cardio-Graphy(-Gram); ½ÉÀüµµ = EKG 1. Conducting System Structu... |
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| Dent, dent | dentistry, dentist, dental, dentition |
| DENT | Dental Exposure Normalization Technique |
| NYHA | New York Heart Association Heart Disease¿¡ ´ëÇÑ Functional Classification &nbs... |
| FF | degree of fineness of abrasive particles; fat-free; father factor; fecal frequency; fertility factor... |
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| dent | 1. <prefix> Relating to the teeth or dentition, dental. See: odonto-. Origin: L. Dens, tooth 2. A slight depression, or small notch or hollow, made by a blow or by pressure; an indentation. "A blow that would have made a dent in a pound of butter." (De Quincey) Origin: A variant of Dint. Source: Websters Dictionary (21 Jun 2000) |
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| floss | 1. <botany> The slender styles of the pistillate flowers of maize; also called silk. 2. Untwisted filaments of silk, used in embroidering. Floss silk, silk that has been twisted, and which retains its loose and downy character. It is much used in embroidery. Called also floxed silk. Floss thread, a kind of soft flaxen yarn or thread, used for embroidery; called also linen floss, and floss yarn. Origin: It. Floscio flabby, soft, fr. L. Fluxus flowing, loose, slack. See Flux. Source: Websters Dictionary (01 Mar 1998) |
| floss silk | dental floss |
| Reil's ribbon | A band of white fibres originating from the gracile and cuneate nuclei and decussating in the lower medulla; thence it passes upward through the centre of the medulla oblongata, close to the median raphe; on entering the pons it spreads out laterally to form a flat band ascending over the dorsal border of the pontine nuclei; in the mesencephalon it passes over the dorsal border of the substantia nigra and is displaced laterally by the red nucleus; passing medial to the medial geniculate body, the bundle enters and terminates in the ventral posterior nucleus of the thalamus. Throughout their course, the fibres retain a somatotopic order such that those originating from the gracile nucleus and representing the lower extremity lie lateral to those originating in the cuneate nucleus and representing the arm. The medial lemniscus conveys somatic-sensory information involved in tactile discrimination (two-point discrimination), position sense, and vibration sense. Synonym: lemniscus medialis, medial fillet, Reil's band, Reil's ribbon. (05 Mar 2000) |
| ribbon | 1. A fillet or narrow woven fabric, commonly of silk, used for trimming some part of a woman's attire, for badges, and other decorative purposes. 2. A narrow strip or shred; as, a steel or magnesium ribbon; sails torn to ribbons. 3. Same as Rib-band. 4. Driving reins. 5. A bearing similar to the bend, but only one eighth as wide. 6. A silver. The blue ribbon, and The red ribbon, are phrases often used to designate the British orders of the Garter and of the Bath, respectively, the badges of which are suspended by ribbons of these colours. See Blue ribbon, under Blue. Ribbon fish. A tapeworm. A nemertean. Origin: OE. Riban, OF. Riban, F. Ruban, probably of German origin; cf. D. Ringband collar, necklace, E. Ring circle, and band Alternative forms: riband, ribband. Source: Websters Dictionary (01 Mar 1998) |
| ribbon arch | A thin, ribbon-shaped, rectangular orthodontic arch wire applied to the dental arch's so that its widest dimension is parallel to the labial or buccal surfaces of the teeth. (05 Mar 2000) |
| ribbon arch appliance | An appliance consisting of a rectangular wire inserted into a specially designed bracket attached to the labial and buccal surfaces of the teeth. (05 Mar 2000) |
| ribbon synapse | <biology, physiology> Ultrastructurally distinct type of synapse found in a variety of sensory receptor cells such as retinal photoreceptor cells, cochlear hair cells and vestibular organ receptors, as well as in a nonsensory neuron, the retinal bipolar cell. Unlike most neurons, these cells do not use regenerative action potentials but release transmitter in response to small graded potential changes. Ribbon synapses have different exocytotic machinery from conventional synapses in containing dense bars or ribbons anchored to the presynaptic membrane covered with a layer of synaptic vesices. The ribbons have been proposed to shuttle synaptic vesicles to exocytotic sites. (23 Aug 1998) |
| spastic flat foot | Eversion of the foot with spasm of the muscles (peroneal) on the outer side; often associated with abnormal bars of bone cartilage or fibrous tissue between the calcaneum and the navicular (scaphoid) or between the navicular and the talus, resulting in a tarsal coalition. (05 Mar 2000) |
| optical flat | <microscopy> Usually, a glass or quartz plate or disk, the thickness of which should be at least 1/10 of its diameter. It is ground until any remaining unevenness can be measured only by interferometric methods. Their maximum departure from flatness usually is less than 1/10 of the sodium doublet (589.3 nm). (05 Aug 1998) |
| flat | 1. Having an even and horizontal surface, or nearly so, without prominences or depressions; level without inclination; plane. "Though sun and moon Were in the flat sea sunk." (Milton) 2. Lying at full length, or spread out, upon the ground; level with the ground or earth; prostrate; as, to lie flat on the ground; hence, fallen; laid low; ruined; destroyed. "What ruins kingdoms, and lays cities flat!" (Milton) "I feel . . . My hopes all flat." (Milton) 3. Wanting relief; destitute of variety; without points of prominence and striking interest. "A large part of the work is, to me, very flat." (Coleridge) 4. Tasteless; stale; vapid; insipid; dead; as, fruit or drink flat to the taste. 5. Unanimated; dull; uninteresting; without point or spirit; monotonous; as, a flat speech or composition. "How weary, stale, flat, and unprofitable Seem to me all the uses of this world." (Shak) 6. Lacking liveliness of commercial exchange and dealings; depressed; dull; as, the market is flat. 7. Clear; unmistakable; peremptory; absolute; positive; downright. "Flat burglary as ever was committed." (Shak) "A great tobacco taker too, that's flat." (Marston) 8. Below the true pitch; hence, as applied to intervals, minor, or lower by a half step; as, a flat seventh; A flat. Not sharp or shrill; not acute; as, a flat sound. 9. Sonant; vocal; applied to any one of the sonant or vocal consonants, as distinguished from a nonsonant (or sharp) consonant. Flat arch. <geometry> A coat of water colour of one uniform shade. To fall flat, to produce no effect; to fail in the intended effect; as, his speech fell flat. "Of all who fell by saber or by shot, Not one fell half so flat as Walter Scott." (Lord Erskine) Origin: Akin to Icel. Flatr, Sw. Flat, Dan. Flad, OHG. Flaz, and AS. Flet floor, G. Flotz stratum, layer. 1. A level surface, without elevation, relief, or prominences; an extended plain; specifically, in the United States, a level tract along the along the banks of a river; as, the Mohawk Flats. "Envy is as the sunbeams that beat hotter upon a bank, or steep rising ground, than upon a flat." (Bacon) 2. A level tract lying at little depth below the surface of water, or alternately covered and left bare by the tide; a shoal; a shallow; a strand. "Half my power, this night Passing these flats, are taken by the tide." (Shak) 3. Something broad and flat in form; as: A flat-bottomed boat, without keel, and of small draught. A straw hat, broad-brimmed and low-crowned. <machinery> A car without a roof, the body of which is a platform without sides; a platform car. A platform on wheel, upon which emblematic designs, etc, are carried in processions. 4. The flat part, or side, of anything; as, the broad side of a blade, as distinguished from its edge. 5. A floor, loft, or story in a building; especially, a floor of a house, which forms a complete residence in itself. 6. <chemical> A horizontal vein or ore deposit auxiliary to a main vein; also, any horizontal portion of a vein not elsewhere horizontal. 7. A dull fellow; a simpleton; a numskull. "Or if you can not make a speech, Because you are a flat." (Holmes) 8. A character [<flat/] before a note, indicating a tone which is a half step or semitone lower. 9. <geometry> A homaloid space or extension. Source: Websters Dictionary (01 Mar 1998) |
| flat affect | The absence of or diminution in the amount of emotional tone or outward emotional reaction typically shown by others or oneself under similar circumstances; a milder form is termed blunted affect. (05 Mar 2000) |
| flat bone | A type of bone characterised by its thin, flattened shape, such as the scapula or certain of the cranial bones. Synonym: os planum. (05 Mar 2000) |
| flat chest | A chest in which the anteroposterior diameter is shorter than the average. Synonym: alar chest, pterygoid chest. (05 Mar 2000) |
| flat condyloma | <tumour> A condyloma of the uterine cervix or other site caused by human papilloma virus infection and characterised histologically by koilocytosis without papillomatosis. (05 Mar 2000) |
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