1. a submicroscopic structural unit composed of a few molecules, especially a cluster of molecules in a colloidal solution or a structural unit in a polymer or fiber.
Usage: chemistry; materials science; also spelled 'micelle'

Examples

• Soap molecules form micells in water that help dissolve oils and dirt.
• The polymer's strength comes from the arrangement of micells within its structure.
• Detergents work by creating micells that trap hydrophobic substances.