Extracted from the Wikipedia article Semitic root.
Triconsonantal roots
A triliteral or triconsonantal root (Arabic: جذر ثلاثي, jiḏr ṯulāṯī; Hebrew: שורש תלת־עיצורי, šoreš təlat-ʻiṣuri; Syriac: ܫܪܫܐ, šeršā) is a root containing a sequence of three consonants.