polyurethane
Meaning
a synthetic resin or plastic used especially in tough chemical-resistant coatings, adhesives, and foams.
Structure
Usage
the mattress is made from high-density polyurethane foam for added support.
they applied a protective polyurethane coating to the wooden floor.
the insulation in the walls is primarily polyurethane.
Etymology
the word 'polyurethane' is a modern scientific compound formed in the 20th century. the first element, 'poly-', is borrowed from greek, indicating a polymer—a large molecule composed of many repeating subunits. the second element, 'urethane', originates from the chemical name for ethyl carbamate, itself a compound of 'urea' and 'ethane'. thus, the term's literal construction signifies a polymer made from multiple urethane units. this logical naming reflects the material's chemical structure, where many urethane linkages connect to form long, durable chains, leading to its versatile applications in foams, coatings, and elastomers.
Analysis
- poly: from greek 'polys', meaning 'many, much'. a combining form used in scientific terminology to denote multiplicity. - urethane: a chemical term derived from 'urea' (a compound found in urine) + 'ethane' (a type of hydrocarbon). in this context, it refers to a specific class of organic compounds.