polymer
- 01 C1 Advanced
a very large molecule made of many small, repeating units joined together.
A macromolecule composed of many repeating subunits, known as monomers, which are chemically bonded in a chain or network.
Simple“DNA is a natural polymer that carries all the genetic information for living things.”
In context“The scientist explained how the individual monomers link together during polymerization to create a stable, long-chain polymer.”
UsageOften used as a countable noun when referring to specific types of molecules.
SynonymsmacromoleculeAntonyms - 02 C1 Advanced
a material made from these molecules, such as plastic or rubber.
A synthetic or natural material consisting of polymer molecules, valued for its durability and flexibility.
Simple“This new polymer is much stronger and lighter than the plastic we used before.”
In context“Engineers are developing a biodegradable polymer to replace traditional plastics in food packaging and reduce environmental waste.”
UsageCan be used as an uncountable noun when referring to the substance in general.
“Changing the carbon source used during bacterial fermentation—essentially, what bacteria are fed—can significantly influence the properties of the sugar polymers they produce, known as bacterial exopolysaccharides (EPSs).”
“When many such chains are densely packed, they form what physicists call a polymer melt.”
From poly- + -mer, from Ancient Greek πολύς (polús, “many”) + μέρος (méros, “part”). Coined by Jöns Jacob Berzelius in 1833, though his definition was quite different from the modern one.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.