Di´drachmon (a double drachma), a silver coin equal to two Attic drachmae, and also to the Jewish half shekel (Joseph. Antiq. iii. 8. 2). It was therefore equivalent to about 1s. 4d. of our money. By the law every Jew was required to pay half a shekel to the Temple (, sq.), and this amount is represented by the didrachma in , where it is used for the 'tribute-money' demanded of Christ.