The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
A strong, heat-resistant fiber formed of polymers with repeating aromatic groups branching from a carbon backbone, used in materials for bulletproof vests and radial tires. Also called polyaramid.
Origin: ar(omatic) + (poly)amid(e).