| unicostate | <botany> Having a single rib or strong nerve running upward from the base; said of a leaf. Origin: Uni- + costate. Source: Websters Dictionary (01 Mar 1998) |
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| unicursal | <geometry> That can be passed over in a single course; said of a curve when the coordinates of the point on the curve can be expressed as rational algebraic functions of a single parameter <theta/. As <theta/ varies minus infinity to plus infinity, to each value of <theta/ there corresponds one, and only one, point of the curve, while to each point on the curve there corresponds one, and only one, value of <theta/. Straight lines, conic sections, curves of the third order with a nodal point, curves of the fourth order with three double points, etc, are unicursal. Origin: Uni- + L. Currere, cursum, to run. Source: Websters Dictionary (01 Mar 1998) |
| unicuspid | Unicuspidate Having only one cusp, as a canine tooth. (05 Mar 2000) |
| unidentified reading frame | <molecular biology> A reading frame in a sequence of nucleotides in DNA that contains no termination codons and so can potentially translate as a polypeptide chain. (18 Nov 1997) |
| unidimensional | <mathematics> Having but one dimension. See Dimension. Origin: Uni- + dimensional. Source: Websters Dictionary (01 Mar 1998) |
| unidirectional block | Block that prevents passage of an impulse when it approaches from one direction but not from the other, as when block in the A-V node prevents anterograde conduction to the ventricles while retrograde conduction to the atria remains intact. (05 Mar 2000) |
| unidirectional flux | The flux of a substance from one surface of a boundary layer or membrane to the other, disregarding any counterbalancing flux in the other direction, as measured by tracer technique. (05 Mar 2000) |
| unidirectional replication | Replication in which there is movement by a single replication fork. (05 Mar 2000) |
| unifamilial | Relating to or occurring in a single family; denoting especially a nervous disease attacking several of the children in the same family in which no hereditary trait is apparent. (05 Mar 2000) |
| unified medical language system | A research and development program initiated by the national library of medicine to build an intelligent automated system that can understand biomedical concepts, words, and expressions and their interrelationships, and use this understanding to help users retrieve and organise information from a variety of machine-readable sources. The goal of the umls is to compensate for differences in the terminology of the disparate systems and for variations in user modes of expression. The umls project has produced four knowledge sources meant to be used by user interface programs. These are the metathesaurus, the semantic network, the information sources map, and the specialist lexicon. (12 Dec 1998) |
| unifilar | Having only one thread; involving the use of only one thread, wire, fibre, or the like; as, unifilar suspension. <physics> Unifilar magnetometer, an instrument which consists of a magnetic bar suspended at its center of gravity by a long thread, constituting a delicate means for accurately measuring magnetic intensities, also for determining declinations of the magnetic needle. Origin: Uni- + L. Filum a thread. Source: Websters Dictionary (01 Mar 1998) |
| uniflagellate | <biology> Having but one flagellum; as, uniflagellate organisms. Origin: Uni- + flagellate. Source: Websters Dictionary (01 Mar 1998) |
| uniflorous | <botany> Bearing one flower only; as, a uniflorous peduncle. Origin: Uni- + L. Flos, floris, a flower: cf. F. Uniflore. Source: Websters Dictionary (01 Mar 1998) |
| unifoliate | <botany> Having one leaf. (09 Oct 1997) |
| unifoliolate | <botany> Of a leaf, basically compound, but reduced to only one leaflet. (09 Oct 1997) |
| unitarian |
"One who denies the divinity of a Trinitarian." [DD] Fifty years after Bierce, The Unitarian and Universalist churches united in a sensible move to offer an alternative to fundamentalist and orthodox theism.
출처: members.aol.com/porchnus/dict04.htm
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| uni- |
sea Urchin Roe
출처: members.tripod.com/sushilovers/terms.html
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| uncinate |
hooked at the end.
출처: www.biology.lsu.edu/heydrjay/ThomasSay/terms.html
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| unguis |
nail or claw, two incurved hooks which terminate the tarsus. See pulvillus.
출처: www.biology.lsu.edu/heydrjay/ThomasSay/terms.html
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| undulating membrane |
Name given to two quite different structures in Protozoa; in some Mastigophora it is a fin-like ridge across the surface of a cell, with the axoneme of a flagellum near its surface; in some ciliates it is a line of cilia that are fused at their bases, usually beating to force food particles toward the gullet.
출처: www.pestmanagement.co.uk/lib/glossary/glossary_u.s...
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| UN | lacking help |
|---|---|
| UN | not arrogant or presuming |
| UN | in an unassuming manner |
| UN | a quality of naturalness and simplicity |
| UN | lacking boldness or confidence |
| UN | not marked with an asterisk |
| UN | not associated in an exclusive sexual relationship |
| UN | (of animals) able to swim about |
| UN | not fastened together |
| UN | able to withstand attack |
| UN | impossible to achieve |
| UN | the state of being unattainable |