1652, "dry, parched," from L. aridus, from arere "to be dry," from PIE base *as- "to burn, glow" (see ardent). Figurative sense of "uninteresting" is from 1827.
arid (ār'ĭd) Pronunciation Key
Very dry, especially having less precipitation than is needed to support most trees or woody plants. Deserts have arid climates.