Slit

Slit or SLIT may refer to:

Science and technology

 * Slit (protein), in genetics, the midline repellent signaling molecule
 * Slitting, a shearing operation that cuts a large roll of material into narrower rolls
 * Sublingual immunotherapy (SLIT), immunotherapy that involves putting allergen extracts under the tongue

Other uses

 * Slit trench, a defensive fighting position in warfare
 * Slit Woods, a Site of Special Scientific Interest in County Durham, England
 * Arrowslit or loophole, a defensive slot in the wall of a building that allows archers to fire at invaders if the building is threatened