Per"is*sad, a. Etym: [Gr. (Chem.)
Definition: Odd; not even; -- said of elementary substances and of radicals whose valence is not divisible by two without a remainder. Contrasted with artiad.
Source: Webster’s Unabridged Dictionary 1913 Edition
7 November 2024
(verb) remove by or as if by rubbing or erasing; “Please erase the formula on the blackboard--it is wrong!”
The earliest credible evidence of coffee-drinking as the modern beverage appeared in modern-day Yemen. In the middle of the 15th century in Sufi shrines where coffee seeds were first roasted and brewed for drinking. The Yemenis procured the coffee beans from the Ethiopian Highlands.