23-letter words containing f, e, l, o, r
- relativity of knowledge — the theory that all knowledge is relative to the mind, or that things can be known only through their effects on the mind, and that consequently there can be no knowledge of reality as it is in itself
- retrolental fibroplasia — an unusual eye disease occurring in premature infants, usually from being given high concentrations of oxygen, which causes abnormal formation of fibrous tissue behind the lens and often results in blindness.
- self-addressed envelope — addressed to self
- separation of variables — a grouping of the terms of an ordinary differential equation so that associated with each differential is a factor consisting entirely of functions of the independent variable appearing in the differential.
- software developers kit — (jargon, product) (SDK, or "Software Development Kit") Software provided by a software vendor to allow their products to be used with those of other software vendors.
- stereospecific catalyst — a catalyst for stereospecific chemical reactions
- sterling software, inc. — (company) A software company which was bought out by Computer Associates International, Inc.
- survival of the fittest — (not in technical use) natural selection.
- the best of both worlds — advantages of two different things
- the fright of your life — You can use expressions such as the fright of your life or the race of your life to emphasize, for example, that you have never been so frightened or that you never have run faster.
- the kingdom of lorraine — an early medieval kingdom on the Meuse, Moselle, and Rhine rivers: later a duchy
- the lesser of two evils — If you have two choices, but think that they are both bad, you can describe the one which is less bad as the lesser of two evils, or the lesser evil.
- the library of congress — the official library of the United States in Washington, DC. It houses extensive collections in all subject areas and formats, important historical documents, and is also a depository for copyrighted materials.
- the thrill of the chase — If you talk about the thrill of the chase, you are referring to the excitement that people feel when they are trying hard to get something.
- to carry all before you — If a person or team carries all before them, they succeed very easily.
- to have feelings for sb — to be emotionally or sexually attracted to
- to have your hands full — If you have your hands full with something, you are very busy because of it.
- to keep sth to yourself — If you keep something to yourself, you do not tell anyone else about it.
- to play for high stakes — to gamble on something very important
- to turn over a new leaf — If you say that you are going to turn over a new leaf, you mean that you are going to start to behave in a better or more acceptable way.
- tongass national forest — a temperate rainforest in SE Alaska that also harbors more than two dozen communities, including Juneau: largest US national forest. 17 million acres (69,000 km).
- tortoiseshell butterfly — any of several nymphalid butterflies of the genus Nymphalis, and related genera, having orange-brown wings with black markings
- transcendental function — a function that is not an algebraic function.
- two gentlemen of verona — a comedy (1594–95) by Shakespeare.
- uniform commercial code — a codification of commercial laws designed to provide uniformity among the states
- united states of brazil — former official name of Brazil.
- until hell freezes over — If you say that you will do something until hell freezes over, you are emphasizing that you will do it for a very long time or for ever.
- urea-formaldehyde resin — any of a group of resins formed by the interaction of urea and formaldehyde under conditions that include heat and pH control: used chiefly in the manufacture of buttons, baking enamels, and for making fabrics wrinkle-resistant.
- velocity of circulation — the frequency with which a single unit of currency or the total money supply turns over within the economy in a given year.
- wolfgang amadeus mozart — Wolfgang Amadeus [woo lf-gang am-uh-dey-uh s;; German vawlf-gahng ah-mah-dey-oo s] /ˈwʊlf gæŋ ˌæm əˈdeɪ əs;; German ˈvɔlf gɑŋ ˌɑ mɑˈdeɪ ʊs/ (Show IPA), 1756–91, Austrian composer.