colloid

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English - English
A stable system of two phases, one of which is dispersed in the other in the form of very small droplets or particles
An intimate mixture of two substances one of which, called the dispersed phase (or colloid), is uniformly distributed in a finely divided state throughout the second substance, called the dispersion medium (or dispersing medium). The dispersion medium may be a gas, a liquid, or a solid, 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 an aerosol. A system of solid substances or water-insoluble liquids colloidally dispersed in liquid water is called a hydrosol
Glue-like
Very finely divided solid particles which will not settle out of a solution; intermediate between a true dissolved particle and a suspended solid which will settle out of solution The removal of colloidal particles usually requires coagulation to form larger particles which may be removed by sedimentation and/or filtration
A substance that remains suspended in a solution or fails to settle out of solution
A stable dispersion of small solid particles in a liquid
insoluble particles (larger than single molecules) in a stable suspension
As a size term refers to particles smaller than 0 00024 mm, smaller than CLAY size
a suspension of particles in a dispersing medium (17 8)
A gelatinous substance-in-solution Beer is considered a colloid, as is gelatin Many reactions in beer involve the colloidal state, especially those affecting haze and head stability
a group of atoms of molecules that form a solid particle which is too small to settle out of solution under normal gravitational forces
Material of very fine particle size, usually between 10-7 cm in diameter
Small particles (10-5 to 10-7 cm) in liquid which behave like a solution (no settling of particles)
{s} sticky, resembling glue
a solid, liquid, or gaseous substance made up of very small, insoluble, nondiffusible particles (as single large molecules or masses of smaller molecules) that remain in suspension in a surrounding solid, liquid, or gaseous medium of different matter a state of matter consisting of such a substance dispersed in a surrounding medium All living matter contains colloidal material, and a colloid has only a negligible effect on the freezing point, boiling point, or vapor pressure of the surrounding medium [< Greek kolla, glue + -oid; coined by T Graham (1805-69), Scottish chemist]
A constituent element in the dispersion of microscopic particles bigger than a macromolecule
Small particles in the size range of 10-9 to 10-6 meters that are suspended in a solvent Naturally occurring colloids in groundwater arise from clay minerals
a suspension of particles in a dispering medium
A type of solution in which the particles are not dissolved but are dispersed throughout the solvent or medium and held in suspension
Colloidal particles are so small and light that they do not settle in water The movement of water molecules is enough to keep them in suspension It is important to remember that colloidal particles occur in a suspension, not a solution A simple way to tell the difference is to shine a beam of light through the liquid If you can see the beam it is a suspension
Usually refers to the state of subdivision of dispersed particles; intermediate between very small particles in true solution and large particles in suspension Proteins and pectins are usually colloidal
A gelatinous substance found in colloid degeneration and colloid cancer
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
A substance as albumin, gum, gelatin, etc
a mixture with properties between those of a solution and fine suspension
State of subdivision of matter which comprises either single large molecules or aggregations of smaller molecules in a dissimilar vehicle, usually held separate (prevented from peptization) by molecular potential or chemical additives
when large numbers of molecules swarm together due to intermolecular forces The dispersed phase in a colloid has a huge surface area
{i} sticky substance composed of particles that do not dissolve in other substances
water-soluble, non-crystalline substances such as gelatin, glue, or albumen, of very fine granule size, used as vehicles in photomechanical sensitizers in screen printing and made light-sensitive by the addition of a bichromate
Most frequently a special type of liquid mixture or suspension in which the particles of suspended liquid or solid are present in a very finely divided form (i e , particle size from about 1 to 500 millimicrons in diameter) The colloidal suspension of liquids in liquids is an emulsion *7 6/30/98
Particles suspended in a liquid, which are larger than molecular size but small enough to be moved about by molecular collisions These particles do not settle under gravity Their surface area is very large per gram, and the particles have a charge due to ions sorbed on the surface This charge prevents coagulation or clumping of the particles and therefore, coagulation can be brought about by neutralizing the charge
Resembling glue or jelly; characterized by a jellylike appearance; gelatinous; as, colloid tumors
a suspension of particles in a dispersing medium
Substance consisting of particles that, although too tiny to be seen with the unaided eye (typically 1 nanometre to 10 micrometres), are substantially larger than atoms and ordinary molecules and that are dispersed in a continuous phase. Both the dispersed phase and the continuous phase may be solid, liquid, or gas; examples include suspensions, aerosols, smokes, emulsions, gels, sols, pastes, and foams. Colloids are often classified as reversible or irreversible, depending on whether their components can be separated. Dyes, detergents, polymers, proteins, and many other important substances exhibit colloidal behaviour
A suspension of sub-light-microscopic particles This definition arbitrarily limits the size of the particles to 0 1 - 0 005mm Such particles may be studied by dark field illumination, particularly with the light ultramicroscope or by means of an electron microscope
A particle, which may be a molecular aggregate, with a diameter of 0 1 to 0 001 µm Soil clays and soil organic matter are often called soil colloids because they have particle sizes that are within, or approach colloidal dimensions
colloidal
Of, pertaining to, or consisting of a colloid
colloidal
Particles that remain in suspension in a surrounding medium of different matter
colloidal
of or relating to or having the properties of a colloid
colloidal
Pertaining to, or of the nature of, colloids
colloidal
Colloidal means that the substance is ground finely enough to remain suspended in the suspension medium *6 6/30/98
colloidal
{s} resembling a colloid (sticky substance composed of particles that do not dissolve in other substances)
colloidal
Colloidal describes atoms or molecules dispersed in a gas, liquid or solid, which resist sedimentation (setting to the bottom), diffusion (spreading out), and filtration
colloids
Miniature cells in meat, fish and poultry
colloids
Small particles which have a negligible settling velocity These particles have a very small mass so gravitational force is low compared to surface frictional forces Typical colloidal sizes range from 10-3 mm to 1 mm
colloids
These are the finest particles in the soil The surfaces of colloids attract base ions, which plants use as nutrients
colloids
Very small, finely divided solids (particles that do not dissolve) that remain dispersed in a liquid for a long time due to their small size and electrical charge
colloids
Very small, less than 1 ðmm, finely divided solids (that do not dissolve) that remain dispersed in a liquid for a long time due to their small size and electrical charge
colloids
Finely divided solids which will not settle out by gravity alone but which may be removed by coagulation or biochemical action
colloids
Very small particles with at least one dimension within the range 10 nanometers to 1 micrometer, and are stabilized in solution by chemical or electrochemical means
colloids
plural of colloid
colloids
Very small, finely divided solids (that do not dissolve) that remain dispersed in a liquid for a long time due to their small size and electrical charge
colloid

    Hyphenation

    col·loid

    Turkish pronunciation

    käloyd

    Pronunciation

    /ˈkäloid/ /ˈkɑːlɔɪd/

    Etymology

    () From Ancient Greek κόλλα ‘glue’ + -oid.
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