13-letter words containing r, u, f, l, e, d
- sulfapyridine — a sulfanilamide derivative, C 1 1 H 1 1 N 3 O 2 S, formerly used for infections caused by pneumococci, now used primarily for a particular dermatitis.
- superfluidity — a fluid that exhibits frictionless flow, very high heat conductivity, and other unusual physical properties, helium below 2.186 K being the only known example.
- tetrafluoride — a fluoride containing four fluorine atoms.
- ultrararefied — extremely rarefied
- underinflated — lacking sufficient air pressure
- unelectrified — not powered by electricity
- unrefined oil — oil that hasn't been refined or processed
- user-friendly — easy to use, operate, understand, etc.: the most user-friendly personal computer now on the market.
- well-favoured — of pleasing appearance; good-looking; pretty or handsome.
- wonderfulness — excellent; great; marvelous: We all had a wonderful weekend.