a. [irreg. f. TRADE sb. + -AL.] Of or pertaining to trade; commercial.
1872. Lond. & China Telegraph, 4 March, 171/1. The true English jealousy with which he has always guarded the port and its tradal interests from outside enemies.
1905. A. Stead, Gt. Japan (1906), 392. Bugbears placed in the way of Japan’s tradal relations with foreign countries.
