15-letter words containing e, u, r, o
- auditor general — (in Canada) a federal official responsible for auditing government departments and making an annual report
- augmented roman — a writing system based on an expanded English alphabet, consisting of 43 characters representing different phonemes of spoken English, used for teaching beginners to read. Abbreviation: I.T.A., i.t.a.
- augusta gregory — Lady Augusta (Isabella Augusta Persse) 1852–1932, Irish dramatist.
- aurora borealis — the aurora seen around the North Pole
- authoritatively — having due authority; having the sanction or weight of authority: an authoritative opinion.
- autobiographers — Plural form of autobiographer.
- autobiographies — Plural form of autobiography.
- autocorrelation — the condition occurring when successive items in a series are correlated so that their covariance is not zero and they are not independent
- autocorrelative — Relating to autocorrelation.
- autodestructive — likely to cause one's own destruction
- autofluorescent — Of, pertaining to, or exhibiting autofluorescence.
- automata theory — the formal study of the power of computation of abstract machines
- automatic drive — an automotive transmission requiring either very little or no manual shifting of gears.
- automatic rifle — a type of light machine gun capable of firing automatically or in single shots.
- autostereoscopy — The display of stereoscopic images without the use of special viewing equipment.
- autotetraploidy — the generation of the tetraploid state, created by the fusing of two nuclei from the same species
- autotransformer — a transformer in which part of the winding is common to both primary and secondary circuits
- backup software — (tool, software) Software for doing a backup, often included as part of the operating system. Backup software should provide ways to specify what files get backed up and to where. It may include its own scheduling function to automate the procedure or, preferably, work with generic scheduling facilities. It may include facilities for managing the backup media (e.g. maintaining an index of tapes) and for restoring files from backups. Examples are Unix's dump command and Windows's ntbackup.
- bacteriophagous — Pertaining to the predation and consumption of bacterium.
- bad housekeeper — a person who is not an efficient and thrifty domestic manager
- bargain counter — a store counter on which goods are displayed for sale at reduced prices
- barium chloride — a poisonous compound, BaCl2, consisting of flat white crystals that are soluble in water: it is used to treat water, metals, leather, etc.
- barium chromate — a yellow, crystalline compound, BaCrO 4 , used as a pigment (barium yellow)
- barium peroxide — a gray-white powder, BaO2, used as a bleach and in making hydrogen peroxide
- basic autocoder — Early system on IBM 7070. Listed in CACM 2(5):16 (May 1959).
- be snowed under — to be overwhelmed, esp with paperwork
- beam-power tube — a vacuum tube in which the stream of electrons flowing to the plate is focused by the action of a set of auxiliary, charged elements, giving an increase in output power.
- beast of burden — A beast of burden is an animal such as an ox or a donkey that is used for carrying or pulling things.
- beetroot purple — a deep purple-red; a purple pigment derived from beets.
- benzyl fluoride — a colorless liquid, C 7 H 7 F, used in organic synthesis.
- bergius process — a method of hydrogenation formerly used with coal to produce an oil similar to petroleum.
- bernoulli trial — one of a sequence of independent experiments each of which has the same probability of success, such as successive throws of a die, the outcome of which is described by a binomial distribution
- beurre noisette — a sauce of butter cooked until golden or nut brown, sometimes flavored with capers, vinegar, herbs, etc.
- bicycle touring — the activity of touring on a bicycle
- biodestructible — biodegradable
- black horehound — a hairy unpleasant-smelling chiefly Mediterranean plant, Ballota nigra, having clusters of purple flowers: family Lamiaceae (labiates)
- blockade runner — a person, ship etc that tries to carry goods through a blockade
- blockade-runner — a ship or person that passes through a blockade.
- blood corpuscle — one of the cells in the blood
- bloody butchers — a hardy plant, Trillium sessile, common from New York to Georgia and westward, having stalkless, purple or green flowers.
- blue wood aster — a composite plant, Aster cordifolius, of North America, having heart-shaped leaves and pale-blue flowers.
- bonheur-du-jour — a delicate fall-front desk of the late 18th and early 19th centuries.
- booster cushion — an extra seat or cushion placed on an existing seat for a child to sit on in a car
- borough-english — (until 1925) a custom in certain English boroughs whereby the youngest son inherited land to the exclusion of his older brothers
- boustrophedonic — of or relating to lines written in opposite directions
- box huckleberry — a nearly prostrate evergreen huckleberry shrub, Gaylussacia brachycera, of central to eastern North America, having short clusters of white or pink flowers and blue fruit.
- branchiostegous — branchiostegal.
- breach of trust — a violation of duty by a trustee or any other person in a fiduciary position
- break the mould — If you say that someone breaks the mould, you mean that they do completely different things from what has been done before or from what is usually done.
- break-out group — a group of people who detach themselves from a larger group or meeting in order to hold separate discussions