| colour triangle | A graph on which chromaticity coordinates are plotted. (05 Mar 2000) |
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| colour vision defects | Mild to severe impairment in the ability to discriminate or differentiate hues. This disorder may be acquired as a result of diseases of the cones or x chromosome-linked where there is an abnormality but not a complete absence of one of the cone pigments. (12 Dec 1998) |
| colour-contrast microscope | <instrument> A type of microscope in which the condenser stop is of one colour and the annulus is a complement of it so that unstained objects are observed in one colour on a field of the other. (05 Mar 2000) |
| colourado tick fever | A febrile illness characterised by chills, aches, vomiting, leukopenia, and sometimes encephalitis. It is caused by the colourado tick fever virus, a reovirus transmitted by the tick dermacentor andersoni. (12 Dec 1998) |
| colourado tick fever virus | A species of reovirus transmitted by the tick dermacentor andersonii and causing fever, chills, aching head and limbs, and often vomiting. It occurs in the northwestern united states, except the pacific coast. (12 Dec 1998) |
| colourectal | Relating to the colon and rectum, or to the entire large bowel. (05 Mar 2000) |
| colourectal neoplasms | Cancer of the colon and rectum. The most frequent malignant tumour in the united states. Aetiological factors which increase the risk of colourectal cancer include chronic ulcerative colitis, familial polyposis of the colon, exposure to asbestos, irradiation of the cervix. (12 Dec 1998) |
| colourectal neoplasms, hereditary nonpolyposis | A syndrome characterised by autosomal dominant inheritance, a low mean age (41 years) for occurrence of colon cancer, and a marked increase in the proportion of tumours in the proximal colon. (12 Dec 1998) |
| colourectal surgery | A surgical specialty concerned with the diagnosis and treatment of disorders and abnormalities of the colon, rectum, and anal canal. (12 Dec 1998) |
| colourectitis | Inflammation of both colon and rectum. Synonym: colourectitis, proctocolitis, rectocolitis. Origin: colo-+ G. Proktos, anus (rectum), + -itis, inflammation (05 Mar 2000) |
| colourectostomy | <procedure, surgery> Establishment of a communication between the rectum and a discontinuous segment of the colon. Synonym: colourectostomy. Origin: colo-+ G. Proktos, anus (rectum), + stoma, mouth (05 Mar 2000) |
| coloured vision | A condition in which objects appear to be abnormally coloured or tinged with colour; designated according to the colour seen: xanthopsia, yellow vision; erythropsia, red vision; chloropsia, green vision; cyanopsia, blue vision. Synonym: chromatic vision, coloured vision, tinted vision. Compare: dyschromatopsia. Origin: chromato-+ G. Opsis, vision (05 Mar 2000) |
| colourimeter | A device used to find out the concentration of particles suspended in a solution or a liquid medium by beaming light through it and measuring the amount of light that makes it out the other side. (The process is a part of the study of spectroscopy.) The device can be used to measure turbidity, or the amount of bacterial cells in a medium. The method of colourimetry is based on the Beer-Lambert Law. (09 Oct 1997) |
| colourimetric | Relating to colourimetry. (05 Mar 2000) |
| colourimetric caries susceptibility test | A colourimetric test for determining dental caries activity or susceptibility based on the rate of acid production by acidogenic oral microorganisms (e.g., lactobacillus) in a glucose medium, using bromcresol green as the indicator, and producing a colour change from green to yellow. Synonym: colourimetric caries susceptibility test. (05 Mar 2000) |
| echocardiography, doppler, colour | Echocardiography applying the doppler effect, with the superposition of flow information as colours on a gray scale in a real-time image. (12 Dec 1998) |
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| tone colour | The distinguishing quality of a sound, by which one may determine its source. Synonym: tone colour. Origin: Fr. (05 Mar 2000) |
| extrinsic colour | Colour applied to the external surface of a dental prosthesis. (05 Mar 2000) |
| eye colour | Colour of the iris. (12 Dec 1998) |
| Young-Helmholtz theory of colour vision | A theory that there are three colour-perceiving elements in the retina: red, green, and blue. Perception of other colours arises from the combined stimulation of these elements; deficiency or absence of any one of these elements results in inability to perceive that colour and a misperception of any other colour of which it forms a part. Synonym: Helmholtz theory of colour vision. (05 Mar 2000) |
| ultrasonography, doppler, colour | Ultrasonography applying the doppler effect, with the superposition of flow information as colours on a gray scale in a real-time image. This type of ultrasonography is well-suited to identifying the location of high-velocity flow (such as in a stenosis) or of mapping the extent of flow in a certain region. (12 Dec 1998) |
| Farnsworth-Munsell colour test | A test for colour perception; the task is to arrange 84 colour disks (in four separate racks of 20-22 disks) in a sequence with minimal separation of hue between adjacent disks. (05 Mar 2000) |
| colour | decorate with colors |
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| colour | modify or bias |
| colour | (photography) "color film" |
| colour | barrier preventing blacks from participating in various activities with whites |
| colour | genetic inability to distinguish differences in hue |
| colour | the tendency for a color to look the same under widely different viewing conditions |
| colour | add color to |
| colour | barrier preventing blacks from participating in various activities with whites |
| colour | a mere semblance of legal right |
| colour | a planned combination of colors |
| colour | a television that transmits images in color |
| colour | a television that transmits images in color |