Recurring; returning from time to time; reappearing; repeated: as, recurrent pains of a disease.In crystallography, noting a crystal which exhibits an oscillatory combination of two sets of planes. See oscillatory.In anatomy, turned back in its course, and running in a direction the opposite of its former one: specifically noting the inferior laryngeal branch of the pneumogastric. See the following phrases.In entomology, turning back toward the base: as, a recurrent process.A branch which is more or less turned toward the base of the wing, in a direction contrary to the nervure from which it arises. Many of these recurrent nervures are distinguished.A vein of the wing which, after running toward the apex, is bent or curved back toward the base, as in many Coleoptera.The anterior, a larger branch, arising just behind the perforation of the Interosseous membrane, and anastomosing with the lower articular popliteal arteries.The posterior, arising a little lower than the anterior (though they often have a common origin), and communicating with the inferior profunda, the anastomotic, and posterior interosseous recurrent.n. Any recurrent nerve or artery.In paleontology, reappearing without essential change in organic composition: used of faunas which reappear after their first disappearance from a given geological section, or of a species which thus returns after departure. The conception of recurrent faunas implies the fact of migration and temporary absence from a given geographical province with subsequent return thereto.n. A recurrent verse.