Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A system in which finely divided particles, which are approximately 1 to 1,000 millimicrons in size, are dispersed within a continuous medium in a manner that prevents them from being filtered easily or settled rapidly.
- noun The particulate matter so dispersed.
- noun The gelatinous stored secretion of the thyroid gland, consisting mainly of thyroglobulin.
- noun Gelatinous material resulting from degeneration in diseased tissue.
- adjective Of, relating to, containing, or having the nature of a colloid.
from The Century Dictionary.
- Like glue or jelly.
- In geology, partly amorphous: applied to minerals.
- noun A substance in a peculiar state of aggregation characterized by slow diffusibility, permeability by crystalloid solutions, etc. See extract.
from the GNU version of the Collaborative International Dictionary of English.
- adjective Resembling glue or jelly; characterized by a jellylike appearance; gelatinous.
- noun (Physiol. Chem.) A substance (as albumin, gum, gelatin, etc.) which is of a gelatinous rather than a crystalline nature, and which diffuses itself through animal membranes or vegetable parchment more slowly than crystalloids do; -- opposed to
crystalloid . - noun (Med.) A gelatinous substance found in colloid degeneration and colloid cancer.
- noun (Med.) a preparation of astringent and antiseptic substances with some colloid material, as collodion, for ready use.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective
Glue -like. - noun chemistry A
stable system of twophases , one of which isdispersed in the other in the form of very smalldroplets orparticles . - noun meteorology An
intimate mixture of twosubstances one of which, called thedispersed phase (or colloid), is uniformly distributed in a finely divided state throughout the second substance, called thedispersion medium (or dispersing medium). The dispersion medium may be agas , aliquid , or asolid , and the dispersed phase may also be any of these, with the exception that one does not speak of a colloidal system of one gas in another. A system of liquid or solid particles colloidally dispersed in a gas is called anaerosol . A system of solid substances or water-insoluble liquids colloidally dispersed in liquid water is called ahydrosol . - noun geology A
particle less than 1micron indiameter , following theWentworth scale
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a mixture with properties between those of a solution and fine suspension
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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When the secreting elements increase out of proportion to the stroma, numerous rounded or irregular spaces filled with a thick yellow colloid material are formed in the substance of the goitre -- _colloid goitre_.
Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. Alexander Miles 1893
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Early work in colloid chemistry had also been carried out by Wolfgang Ostwald, son of the 1909 Laureate Wilhelm Ostwald, but this was not of a caliber earning him a Nobel Prize.
The Nobel Prize in Chemistry: The Development of Modern Chemistry 2010
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If the mass concentration of the colloid is known, it is easy to obtain the mass of the particles, and from this - assuming, for example, a spherical shape and normal specific gravity - the size can be calculated.
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(A colloid is a stable suspension of silver particles in water.)
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There is no life without chemical reactions, and yet chemical reaction is not life; there is no life without what biologists call the colloid state, and yet the colloid state is not life.
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In passing it may be mentioned that the name colloid originates precisely from kolla, the Greek word for glue.
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There is no life without chemical reactions, and yet chemical reaction is not life; there is no life without what biologists call the colloid state, and yet the colloid state is not life.
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There is no life without chemical reactions, and yet chemical reaction is not life; there is no life without what biologists call the colloid state, and yet the colloid state is not life.
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Such mastication appears to liberate the ouabain from the bark and mix it with saliva to form a coarse colloid, which is then specifically applied only to the lateral line hairs.
USATODAY.com News 2011
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Mucinous breast cancer, also known as colloid carcinoma, is a rare type of invasive breast cancer formed by mucus-producing cancer cells.
PhysOrg.com - latest science and technology news stories 2009
sumit commented on the word colloid
Is defined by the Udden-Wentworth scale as a suspension comprised of particles whose diameter is less than a micrometre.
February 26, 2007