Resorcinols

Part of speech: noun

Definitions

1. A group of organic compounds characterized by a benzene ring with two hydroxyl (–OH) groups in the meta positions, commonly utilized in chemical syntheses
2. These substances are often employed in the formulation of adhesives, coatings, and rubber products due to their adhesive properties
3. Structurally related to phenols, they serve as important intermediates in the manufacture of various dyes and pharmaceuticals

Etymology: Resorcinol is a compound: it is formed from "resin" and "orcinol," and its name records a chemical link between the two. The first part, "resin," traces back through Old French "resine" and Latin "resina" to Ancient Greek "rhētinē," a word for the sticky substance from pine trees. "Orcinol" comes from the orchil lichen, a source of purple dyes. Its own lineage runs through Old French "orchel," Italian "oricello," and Latin "ōricula," a diminutive of "auris," meaning "ear," a reference to the shape of the lichen's leaves. The second part of the name is more surprising. The name of orcinol ultimately rests on a comparison to a human ear, and the same root that gives "auricle" also sits behind the orchil dye. Resorcinol was named by combining the two, so the word joins a pine-resin root with a lichen-dye word that began as a reference to the ear. The plural "resorcinols" simply refers to more than one form or type of this compound, as is standard for chemical names used in technical writing.