According to the Holy Bible, it was the name of a slave of Abraham, who was also his wife and with whom he had Ishmael. Gelatin that is obtained from certain algae. Substance used to grow microbes ( Agar, Agar).
AGAR: Slave of Abraham.
AGAR: Gelatine of marine origin vegetable.
AGAR: Town of U.S, in Dakota South and Sully County.