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unsaturated

 [un-sach´er-āt″ed]
1. not having all affinities of its elements satisfied (unsaturated compound).
2. not holding all of a solute that can be held in solution by the solvent (unsaturated solution).
3. denoting compounds in which two or more atoms are united by double or triple bonds.

un·sat·ur·at·ed

(ŭn-sach'ŭr-āt'ĕd),
1. Not saturated; denoting a solution in which the solvent is capable of dissolving more of the solute.
2. Denoting a chemical compound in which all the affinities are not satisfied, so that still other atoms or radicals may be added to it.
3. In organic chemistry, denoting compounds containing double and/or triple bonds or a ring structure.

unsaturated

/un·sat·u·rat·ed/ (un-sach´ur-āt″ed)
1. not holding all of a solute which can be held in solution by the solvent.
2. denoting compounds in which two or more atoms are united by double or triple bonds.
Enlarge picture
Unsaturated (A) and saturated (B) two-carbon hydrocarbons.

unsaturated

(ŭn-săch′ə-rā′tĭd)
adj.
1. Of or relating to an organic compound, especially a fatty acid, containing one or more double or triple bonds between the carbon atoms.
2. Capable of dissolving more of a solute at a given temperature.

un′sat·u·ra′tion n.

unsaturated

[unsach′ərātid]
Etymology: ME, un + L, saturare, to fill
1 adj, describing a solution that is capable of dissolving more of the solute; not saturated.
2 n, an organic compound in which one or more pairs of carbon atoms are united by double or triple bonds, as in unsaturated fatty acids. Also called unsaturated hydrocarbon. Compare saturated.

un·sat·ur·at·ed

(ŭn-sach'ŭr-āt-ĕd)
1. Not saturated; denoting a solution in which the solvent is capable of dissolving more of the solute.
2. Denoting a chemical compound in which all the affinities are not satisfied, so that still other atoms or radicals may be added to it.
3. organic chemistry Denoting compounds containing double and/or triple bonds.

unsaturated

Pertaining to a compound, especially of carbon, in which atoms are linked by double or triple valence bonds. A saturated compound has only single bonds. In general, unsaturated compounds are less stable than saturated compounds and can undergo a wider variety of reactions.

unsaturated

1. not having all affinities of its elements satisfied (unsaturated compound).
2. not holding all of a solute which can be held in solution by the solvent (unsaturated solution).
3. denoting compounds in which two or more atoms are united by double or triple bonds.

unsaturated fatty acids
see fatty acids.
References in periodicals archive ?
Regulation of membrane unsaturation as antioxidant adaptive mechanisms in long-lived animal species.
As many reports show correlation between increased PM fatty acid unsaturation and acclimation to high salt (next section), it is not clear to this point whether the observed reduction in unsaturation level should be interpreted as a defense mechanism or rather as an undesirable process reflecting the salinity-induced damage.
Thus, the oxidative stability of vegetable oil and of methyl esters (biodiesel) obtained therefore may be correlated with the degree of unsaturation of fatty acid component of the oil.
Even though level and combinations of fatty acids of n-6 and n-3 series in the phospholipid fractions demonstrate different specificity, the final total level of unsaturation of male gamete lipid was always high.
The dynamic model is validated with experimental results for the acid value, isomerization concentration, unsaturation concentration, distilled mass, and glycol content in the distillate with data from Salmi et al.
Selectivity of the polymerization process toward the vinylether functionality was critical to prevent gelation during polymerization and to preserve pendent group unsaturation for application of the polyVESFA in coating applications.
It is also established that diets rich in trans-monounsaturated fats, as a result of partial hydrogenation (reduction of some unsaturation with conversion of cis-to-trans-un-saturation as a side effect), increase low-density lipoprotein (LDL) cholesterol (17) and may indirectly increase risk of vascular disease, (18,19) in part reflecting relationships to changes in inflammatory factors, including production of C-reactive protein.
Other subjects covered include determination of end groups, types of unsaturation, polymer branching, and block copolymers.
This combination of hydroxyl group and unsaturation occurs only in castor oil.
Plants maintain membrane fluidity at lower temperatures by increasing the unsaturation of lipids in the phospholipid bilayer.
Iodine value: Ameasure of the degree of unsaturation of a fat.
Differences in steroid ring unsaturation and ring substituents create the chemical diversity of these compounds and, for our purposes, provide a traceable, systematic model for determining the effects of ring unsaturation on chromatographic selectivity (1,2).