registered trademark (DuPont) for a synthetic fiber developed there c. 1965; probably an invented word of no etymology.
ketosis
kettle
kettledrum
*keu-
*keue-
Kevlar
kew
kewl
kewpie
kex
key
)window.location='https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=byronic106@yahoo.com&lc=US&item_name=Donation+to +Help+Keep+Etymonline+Free+and+Open&no_note=0&cn=&curency_code=USD&bn=PP-DonationsBF:btn_donateCC_LG.gif:NonHosted'){kind=link}