The dust and gas surrounding the nucleus of a comet. A defect in an optical system which gives rise to a blurred, pear shaped, comet-like image.
A sleep-like state in which a person is not conscious. May be caused by hyperglycaemia (high blood glucose) or hypoglyceamia (low blood glucose) in people with diabetes.
(Humans as organisms) a state of deep unconciousness in which a person does not respond to any external stimuli
The cloud of diffuse material surrounding the nucleus of a comet.
Type: Term Pronunciation: kō′mă Definitions: 1. A state of profound unconsciousness from which one cannot be roused; may be due to the action of an ingested toxic substance or of one formed in the body, to trauma, or to disease. 2. An aberration of spheric lenses; occurring in cases of oblique incidence (the image of a point becomes...Found on http://www.medilexicon.com/medicaldictionary.php?t=19192
A state of profound unconsciousness from which one cannot be roused.Found on http://www.aans.org/Media/Glossary-of-Terminology
The dust and gas surrounding an active comet's nucleus.
Found on http://www.solarviews.com/eng/terms.htm
Latin, meaning: hair of the head, leaves, rays of light. Found on http://archives.nd.edu/ccc.htm
A spherical cloud of material surrounding the head of a comet. This material is mostly gas that the Sun has caused to boil off the comet's icy nucleus. This gas shines both by reflected sunlight and light emitted by excited molecules. A cometary coma can extend up to a million miles from the nucleus. Found on https://www.encyclo.co.uk/local/20037
A lens defect which results in points of light appearing in the image not as points but as discs with comet-like tails.
Found on http://www.peterashbyhayter.co.uk/glossaryT-Z.html
- a usually terminal tuft of hairs especially on a seed 2. [n] - (astronomy) the luminous cloud of particles surrounding the frozen nucleus of a comet 3. [n] - a state of deep and often prolonged unconsciousnessFound on http://www.webdictionary.co.uk/definition.php?query=coma
A period of profound and prolonged unconsciousness following disease or injury.Found on http://www.encyclo.co.uk/local/20437
a sleep-like state in which a person is not conscious. May be caused by hyperglycemia (high blood glucose) or hypoglycemia (low blood glucose) in people with diabetes.Found on http://www.diabetes.co.uk/glossary/c.html
A spherical cloud of material surrounding the head of a comet. This material is mostly gas that the Sun has caused to boil off the comet's icy nucleus. This gas shines both by reflected sunlight and light emitted by excited molecules. A cometary coma can extend up to a million miles from the nucleus.Found on http://www.diracdelta.co.uk/science/source/c/o/coma/source.html
The gas and dust surrounding the nucleus of a comet.. We see a comet's coma for two reasons. First, because the dust in the coma reflects sunlight and, second, because sunlight makes the gas in the coma fluorescent.
Found on http://www.gcse.com/glos.htm
a condition in which the area of the brain involved in maintaining consciousness is somehow affected, resulting in a state of unconsciousness in which the patient does not respond to stimulation Found on http://www.medichecks.com/glossary.cfm?ltr=C
A coma is a sleep like state when someone is unconscious for a long period of time.
Found on http://www.nhs.uk/Conditions/Pages/hub.xhtml
A state of unconsciousness from which the person cannot be roused by external stimuli.
Found on http://www.gadsbywicks.co.uk/uploaded/3822.pdf
Our Coma Main Article provides a comprehensive look at the who, what, when and how of Coma Coma: A state of deep unarousable unconsciousness. Coma may occur as the result of numerous causes including head trauma, diseases such as diabetes, poisoning, etc.Found on http://www.medterms.com/script/main/art.asp?articlekey=2803
A lens aberration or defect that causes rays that passes obliquely through the lens to be focused at different points on the film plane. Found on http://www.rodsmith.org.uk/photographic%20glossary/rods%20photographic%20gl
A lens aberration restricted to off axis image points; the inability of a lens to render point sources of light near the edges of the frame as circular; the points of light appear as comet-shaped blurs (hence the name coma) with the tails flaring toward the center of the image; this aberration is very difficult to eliminate in wideangle lenses with...Found on http://www.rodsmith.org.uk/photographic%20glossary/rods%20photographic%20gl
[ New Latin , from Greek kw^ma
lethargy, from koima^n
to put to sleep. See Cemetery
.] A state of profound insensibility from which it is difficult or impossible to rouse a person. See Carus
. Found on http://www.encyclo.co.uk/webster/C/113
[ Latin , hair, from Greek ko`mh
.] 1. (Astron.)
The envelope of a comet; a nebulous covering, which surrounds the nucleus or body of a comet. 2. (Botany)
A tuft or bunch, -- as the assemblage of branches forming the head of a tree; or a cluster...Found on http://www.encyclo.co.uk/webster/C/113
A deep prolonged unconsciousness where the patient cannot be aroused. This is usually as the result of a head injury, neurological disease, acute hydrocephaly, intoxication or metabolic derangement. ... (27 Sep 1997) ... Found on http://www.encyclo.co.uk/local/20973
a state of deep and often prolonged unconsciousness; usually the result of disease or injuryFound on https://www.encyclo.co.uk/local/20974
No exact match found