[pol-ee-uh-kril-uh-mahyd, -mid, -ak-ruh-lam-ahyd, -id]

noun Chemistry.

a white, solid, water-soluble polymer of acrylamide, used in secondary oil recovery, as a thickening agent, a flocculant, and an absorbent, and to separate macromolecules of different molecular weights.

Origin of polyacrylamide

First recorded in 1940–45; poly- + acrylamide
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

polyacrylamide in Science



A white, water-soluble polymer containing repeating units of acrylamide (C3H5NO)and related to acrylic acid. Polyacrylamide is used in food packaging, adhesives, coatings, and paper manufacturing. It is also used to reduce soil erosion and as a gel for electrophoresis in the laboratory analysis of protein and DNA structures.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.