تَعَلَّمَ
Translation: He learned.
Its radicals are ʿ-l-m. The initial tāʾ is added, and the middle radical lām carries shaddah.
ItemForm
Rootع ل م
Simple formعَلِمَ
Form IIعَلَّمَ
Form Vتَعَلَّمَ
Form II can describe what a teacher does; Form V here describes the learner's acquisition. Their subjects and meanings must not be confused.