Hoover
- hoo·ver [hoo-ver] –verb: to clean with a vacuum cleaner (Chiefly British)
It is in fact a trademark brand name of a vacuum cleaner. This brand was named after the American industrialist, William H. Hoover (1849-1942) who commercialized vacuum cleaners as one of the "must-have" household items.
Xerox
- xe·rox [zeer-oks] -noun or verb: a name for a copying machine or the act of reproducing printed, written, or pictorial matter by xerography.
This is a trademark brand name for a copy machine. "Xerox" is an invented name from the word xerography which came from the Greek radicals xeros (dry) and graphos (writing), as there are no liquid chemicals involved in the copying process.
Thermos
- ther·mos [thur-muhs] –noun: a vacuum bottle or similar container lined with an insulating material, such as polystyrene, to keep liquid hot or cold
This is a trademark brand name of a vacuum flask. The word is actually derived from the Greek word thermo or "hot".
Prozac
- pro·zac [proh-zak] -noun: a brand of fluoxetine hydrochloride
This is a trademark brand name for a type of drug prescribed for depression. However, it is often widely used to refer to other drugs that treat similar cases of depression.
Spandex
- span·dex [span-deks] –noun: a synthetic fiber composed of a long-chain polymer, used chiefly in the manufacture of garments to add elastic
