Ishtiqaq

Ishtiqaq is the Arabic term for "derivation" or "etymology". It may refer to
 * a branch of traditional Arabic grammar, see Arabic grammar
 * a 9th-century work by Ibn Qutaybah
 * Kitab ul-Ishtiqaq, a 10th-century work by Ibn Duraid.
 * a lost work by Abu Ishaq al-Shatibi (d. 1388)