1(Of organic molecules) having carbon-carbon double or triple bonds and therefore not containing the greatest possible number of hydrogen atoms.
- In common with all unsaturated hydrocarbons hydrogen can be added across the double bond to produce ethane.
- Thus conjugation can occur in molecules in which the unsaturated sites are close in space but are separated by more than a single covalent bond.
- The unsaturated benzene ring readily reacts with halogens, rapidly discoloring bromine water.
1.1Denoting fats containing a high proportion of fatty acid molecules with at least one double bond, considered to be healthier in the diet than saturated fats.
- The vitamin E requirement has long been known to increase with increased intakes of unsaturated fats.
- Most of the fat in peanuts is unsaturated which has been shown to lower one's LDL-cholesterol levels.
- There are two basic kinds of fat: saturated and unsaturated.
- Example sentences
- The color of a dye is due to its ability to absorb light in the visible region of the spectrum, an ability enhanced by unsaturation (presence of double bonds in the molecule) and resonance.
- The current work shows that lipid asymmetry and unsaturation both result in high critical pressures in monolayers.
- Qualitative changes in the levels of fatty acids also occur with cold acclimation, leading to unsaturation of the fatty acids and subsequent protection of plant membranes against freezing stress.
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