Friday, 7 December 2012

polyester=البوليستر


polyester=البوليستر


ONLINE ETYMOLOGY DICTIONARY:

polyester (n.)
1929, formed from polymer + ester. Polyester fiber was discovered 1941.
polymer (n.)
a substance built from a large number of simple molecules of the same kind, 1866, probably from Ger. Polymere (Berzelius, 1830), from Gk. polymeres "having many parts," from polys "many" (see poly-) + meros "part" (see merit (n.)). Related: Polymeric.

No comments:

Post a Comment