piperonal (uncountable)
A white crystalline powder with a floral odour, used in perfume
(chemistry) The methylene ether of 3,4 dihydroxy benzaldehyde; having a melting point of 37°C and boiling point of 263°C
Source: Wiktionary
Pip`er*o"nal, n. (Chem.)
Definition: A white crystalline substance obtained by oxidation of piperic acid, and regarded as a complex aldehyde.
Source: Webster’s Unabridged Dictionary 1913 Edition
15 March 2025
(noun) the replacement of an edge or solid angle (as in cutting a gemstone) by a plane (especially by a plane that is equally inclined to the adjacent faces)
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.