A kind of pattern used as a stimulus in experiments on vision, capable of being arranged to produce various optical illusions.

(biology) A device used to measure the ion currents in individual living cells

plural of patch-box

Alternative spelling of patch box

plural of patch clamp

plural of patch box

(historical, cosmetics) A fancy box, generally with a mirror under the lid, for holding artificial beauty spots, or patches, worn on the face.

plural of Rembrandt patch

The illuminated triangle seen in Rembrandt lighting.

(military) Any humorous or unofficial patch worn by military personnel to identify their unit or team or to provide esprit de corps.