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Any of a class of organic compounds that are fatty acids or their derivatives and are insoluble in water but soluble in organic solvents. They include many natural oils, waxes, and steroids.
- ‘Acidic lipids enhance the adsorption of positive ions due to their negative charge.’
- ‘Alkaloids, phenols, antioxidants and lipids were never detected.’
- ‘The membrane lipids of thermophilic bacteria are rich in saturated fatty acids.’
- ‘The peptide was frozen in place while the lipids and water were briefly allowed to relax around it.’
- ‘It includes the glycerol and carbonyl groups and the hydrocarbon chains of the lipid.’
Early 20th century: from French lipide, based on Greek lipos ‘fat’.
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The definitions of ‘buddy’ and ‘bro’ in the OED have recently been revised. We explore their history and increase in popularity.