- any of a large class of synthetic materials that are polymers containing recurring -COO- groups: used as plastics, textile fibres, and adhesives
WordReference Random House Learner's Dictionary of American English © 2026
pol•y•es•ter /ˈpɑliˌɛstɚ/USA pronunciation
n.
WordReference Random House Unabridged Dictionary of American English © 2026- Textiles[uncountable] a textile fabric used esp. in clothes.
- a piece of clothing made from this fabric:[countable]some polyesters and knits on sale.
pol•y•es•ter
(pol′ē es′tər, pol′ē es′tər),USA pronunciation n.
pol•y•es•ter•i•fi•ca•tion
(pol′ē•es′tər•ə•fi•kā′shən),USA pronunciation n.
- Chemistrya polymer in which the monomer units are linked together by the group –COO–, usually formed by polymerizing a polyhydric alcohol with a polybasic acid: used chiefly in the manufacture of resins, plastics, and textile fibers.
- TextilesAlso called poly. a fabric made from such textile fibers.
- 1925–30; poly- + ester
Collins Concise English Dictionary © HarperCollins Publishers::
polyester /ˌpɒlɪˈɛstə/ n
'polyester' also found in these entries (note: many are not synonyms or translations):
fleece
- poly
- polycotton
- skivvy
- Terylene
- Dacron
- fiberfill
- gabardine
- Kodel
- maleic anhydride
- microfiber
- Mylar
- spinneret