According to Diane Wirth, Alma 11:13 refers to "an onti," which is an Egyptian word meaning "small amount" or "short of an amount." [Diane E. Wirth, A Challenge to the Critics, p. 47]
Although Alma 11:13 states that "an onti was as great as them all," the idea that might be grasped is that the word "onti" was associated with value.