1. a group of naturally occurring molecules including fats, oils, and waxes that are largely composed of carbon and hydrogen and are insoluble in water
Usage: biochemistry; plural form

Examples

• Lipids are essential components of cell membranes.
• The body stores energy in the form of lipids.
• Cholesterol is a type of lipid found in animal cells.
• Plants produce lipids in their seeds and fruits.
• The laboratory analyzed the lipid content of the blood sample.
• Lipids play important roles in hormone production.
• A diet high in certain lipids can affect cardiovascular health.