saturate

Concise Oxford English Dictionary © 2008 Oxford University Press:
saturate

▶verb /ˈsatʃəreɪt/ 

• 1 soak thoroughly with water or other liquid.

• 2 cause to combine with, dissolve, or hold the greatest possible quantity of another substance.

  ■ (usu. be saturated with) fill until no more can be held or absorbed.

• 3 magnetize or charge (a substance or device) fully.

• 4 supply (a market) beyond the point at which the demand for a product is satisfied.

• 5 overwhelm (an enemy target) by concentrated bombing.

▶noun /ˈsatʃərət/ a saturated fat.

– derivatives
saturable adjective.

– origin ME (as adj. meaning ‘satisfied’): from L. saturat-, saturare ‘fill, glut’, from satur ‘full’.