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
8 May 2025
(noun) the act of protecting something by surrounding it with material that reduces or prevents the transmission of sound or heat or electricity
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