aramid fiber

ar·a·mid fiber

A0397050 (ăr′ə-mĭd)n. A strong, heat-resistant fiber formed of polymers with repeating aromatic groups branching from a carbon backbone, having flame retardant properties and used in materials for bulletproof vests and radial tires. Also called polyaramid fiber.
[ar(omatic) + (poly)amid(e).]