The word 'tablet' entered English in the late 14th century from Old French 'tablete', a diminutive of 'table'. The Old French 'table' derived from Latin 'tabula', meaning a board, plank, or flat surface for writing or games. The Latin term is of uncertain deeper origin, though it may be connected to a PIE root meaning 'to stretch' or 'board'. The core semantic logic is clear: a 'tablet' is etymologically a "small, flat board," a meaning which perfectly describes its historical uses for writing, its modern form as a small medicinal cake, and its contemporary identity as a flat, portable computing device.

Structure: table (flat slab) + et (small/diminutive suffix) 'table' originates from Latin 'tabula' (a board, plank, flat piece), via Old French. The suffix '-et' is a diminutive suffix of Old French origin, indicating a small version of something.