| lumichrome | 7,8-Dimethylalloxazine;riboflavin minus its ribityl side chain; produced by ultraviolet irradiation of riboflavin in acid solution. (05 Mar 2000) |
|---|---|
| lumicolchicine | <drug> A derivative of colchicine produced by exposure to ultraviolet light and that does not inhibit tubulin polymerisation, although it has many of the non-specific effects of colchicine. (18 Nov 1997) |
| lumicolchicines | N-(5,6,7,7b,8,10a-hexahydro-1,2,3,9-tetramethoxy- 8-oxobenzo(a) cyclopenta(3,4)cyclobuta(1,2-c)cyclopenten- 7-ylacetamide. Three, alpha, beta, and gamma isomers of ultraviolet degradation products of colchicine that lack many of the physiological actions of the parent; used as experimental control for colchicine actions. (12 Dec 1998) |
| lumiflavin | 7,8,10-Trimethylisoalloxazine;a yellow photoderivative of riboflavin, bearing a methyl group in place of the ribityl; produced by ultraviolet irradiation of riboflavin in alkaline solution. (05 Mar 2000) |
| lumina | Plural of lumen. Origin: L. (05 Mar 2000) |
| luminal | Relating to the lumen of a blood vessel or other tubular structure. (05 Mar 2000) |
| luminance | The brightness of an object, expressed as the luminous flux per unit solid angle per unit projected area, measured in lamberts or in candelas per square meter. Origin: L. Lumino, to light up, fr. Lumen, light (05 Mar 2000) |
| luminescence | Production of light. (09 Oct 1997) |
| luminescence, bacterial | The emission of light by bacteria. It is applied to studies on bacterial viability, metabolism, genetics, adhesiveness, and other physiological properties. (12 Dec 1998) |
| luminescent proteins | Proteins which are involved in the phenomenon of light emission in living systems. Included are the "enzymatic" and "non-enzymatic" types of system with or without the presence of oxygen or co-factors. (12 Dec 1998) |
| luminiferous | Producing or conveying light. Origin: L. Lumen, light, + fero, to carry (05 Mar 2000) |
| luminol | Compound used as a bystander substrate in assaying the metabolic activation of leucocytes by chemiluminescence. When oxidized by the myeloperoxidase/hydrogen peroxide system, it emits light. (18 Nov 1997) |
| luminophore | An atom or atomic grouping in an organic compound that increases its ability to emit light. Origin: L. Lumen, light, + G. Phoros, bearing (05 Mar 2000) |
| luminous | 1. Shining; emitting or reflecting light; brilliant; bright; as, the is a luminous body; a luminous colour. "Fire burneth wood, making it . . . Luminous." (Bacon) "The mountains lift . . . Their lofty and luminous heads." (Longfellow) 2. Illuminated; full of light; bright; as, many candles made the room luminous. "Up the staircase moved a luminous space in the darkness." (Longfellow) 3. Enlightened; intelligent; also, clear; intelligible; as, a luminous mind. " Luminous eloquence." . " A luminous statement." Luminous paint, a paint made up with some phosphorescent substance, as sulphide of calcium, which after exposure to a strong light is luminous in the dark for a time. Synonym: Lucid, clear, shining, perspicuous. Luminously, Luminousness. Origin: L. Luminosus, fr. Lumen light: cf. F. Lumineux. See Luminary, Illuminate. Source: Websters Dictionary (01 Mar 1998) |
| luminous flux | The quantity of light emitted from a point source in a given time; its unit is the lumen. (05 Mar 2000) |
| luminous intensity |
The amount of light flux into a specified solid angle.
출처: highered.mcgraw-hill.com/sites/0072480823/student_...
|
|---|---|
| luminance |
The photometric equivalent of radiance. Luminance is obtained by integrating spectral radiance weighted by luminous efficiency over the visible spectrum. Compare illuminance.
출처: amsglossary.allenpress.com/glossary/browse
|
| luminescence |
Any emission of light at temperatures below that required for incandescence.
출처: amsglossary.allenpress.com/glossary/browse
|
| luminous |
1. In general, pertaining to the emission of visible radiation. 2. In photometry, a modifier used to denote that a given physical quantity, such as luminous emittance, is weighted according to the manner in which the response of the human eye varies with the wavelength of the light.
출처: amsglossary.allenpress.com/glossary/browse
|
| lumbar puncture |
a procedure in which a needle is inserted into the lower region of the spinal canal to take out a sample of spinal fluid or to inject a drug
출처: www.american-depot.com/services/resources_gl_l.asp
|
| lum | having lumps |
|---|---|
| lum | like or containing small stick lumps |
| lum | the commonest and least severe form of actinomycosis |