Anadyr, Or Anadir. I. An extensive gulf or sea of Asia, at the N. E. extremity of Siberia, lying between Cape St. Thaddee and Cape Tchukotskoi, of late years much resorted to for whales.

II. A river of Siberia, having its source in Lake Yoanko in the Stanovoi mountains, about lat. 60° 30' N., lon. 173° E. It traverses the central portions of the Tchuktchi country in N. E. Siberia, flows first W., then E., and after a course of about 500 m. falls into an inlet of the gulf of Anadyr. The country through which it passes is rocky and barren, and covered with snow about nine months in the year.