naphthols
plural of naphthol
Source: Wiktionary
Naph"thol, n. Etym: [Naphthalene + -ol.] (Chem.)
Definition: Any one of a series of hydroxyl derivatives of naphthalene, analogous to phenol. In general they are crystalline substances with a phenol (carbolic) odor. Naphthol blue, Naphthol orange, Naphthol yellow (Chem.), brilliant dyestuffs produced from certain complex nitrogenous derivatives of naphthol or naphthoquinone.
Source: Webster’s Unabridged Dictionary 1913 Edition
7 July 2024
(adjective) free from danger or risk; “secure from harm”; “his fortune was secure”; “made a secure place for himself in his field”
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