15-letter words containing a, f, r, e, i
- a straight face — If you manage to keep a straight face, you manage to look serious, although you want to laugh.
- accessory fruit — a fruit having enlarged accessory structures in addition to those formed from the ovary, as the strawberry, in which the fleshy tissue is the enlarged receptacle and the true fruits are the small, dry achenes borne on its surface
- achilles reflex — ankle jerk.
- adhesive factor — the ratio of the force that can be exerted on driving wheels with full traction to the weight on the driving wheels, usually expressed as a percentage.
- affaire d'amour — a love affair
- affine geometry — the branch of geometry dealing with affine transformations.
- affirmativeness — The property of being affirmative.
- africanized bee — a hybrid of African and European honeybees, developed in Brazil and known for its disease resistance and superior honey production
- after a fashion — If you say that something was done after a fashion, you mean that it was done, but not very well.
- age of aquarius — an astrological era believed to bring increased spirituality and harmony on earth.
- agree to differ — to end an argument amicably while maintaining differences of opinion
- air force cross — a U.S. Air Force decoration awarded for extraordinary heroism in action
- alfred e. smith — Adam, 1723–90, Scottish economist.
- america firster — a member or supporter of the America First Committee.
- amery ice shelf — an ice barrier in Antarctica, in the SW Indian Ocean, bordered by Enderby Land on the N and American Highland on the W.
- anfractuosities — Plural form of anfractuosity.
- anne of austria — 1601–66, wife of Louis XIII of France and daughter of Philip III of Spain: regent of France (1643–61) for her son Louis XIV
- anti-federalism — U.S. History. a member or supporter of the Antifederal party.
- antifederalists — Plural form of antifederalist.
- antiferromagnet — a material which exhibits antiferromagnetism
- antiforeclosure — opposed to the process of foreclosure
- army air forces — a unit comprising almost all aviation, with its personnel, equipment, etc.: it became part of the Air Force on July 26, 1947.
- articles of war — the disciplinary and legal procedures by which the naval and military forces of Great Britain were bound before the 19th century
- artificial feel — a system, used in aircraft that have fully powered control surfaces, providing the pilot with simulated aerodynamic forces on the controls
- artificial gene — a duplicate gene synthesized in the laboratory by combining nucleotides in a sequence characteristic of the copied gene.
- artificial life — (algorithm, application) (a-life) The study of synthetic systems which behave like natural living systems in some way. Artificial Life complements the traditional biological sciences concerned with the analysis of living organisms by attempting to create lifelike behaviours within computers and other artificial media. Artificial Life can contribute to theoretical biology by modelling forms of life other than those which exist in nature. It has applications in environmental and financial modelling and network communications. There are some interesting implementations of artificial life using strangely shaped blocks. A video, probably by the company Artificial Creatures who build insect-like robots in Cambridge, MA (USA), has several mechanical implementations of artificial life forms. See also evolutionary computing, Life.
- artificialness' — made by human skill; produced by humans (opposed to natural): artificial flowers.
- at first glance — If you say that something is true or seems to be true at first glance, you mean that it seems to be true when you first see it or think about it, but that your first impression may be wrong.
- audio frequency — a frequency in the range 20 hertz to 20 000 hertz. A sound wave of this frequency would be audible to the human ear
- auf wiedersehen — goodbye, until we see each other again
- automatic rifle — a type of light machine gun capable of firing automatically or in single shots.
- azobisformamide — (chemistry) azodicarbonamide.
- ballpark figure — approximate number
- bandpass filter — A bandpass filter is a filter designed to pass all frequencies within a band of frequencies.
- bandstop filter — A bandstop filter is a filter designed to eliminate all frequencies within a band of frequencies.
- baptism of fire — If someone who has just begun a new job has a baptism of fire, they immediately have to cope with very many severe difficulties and obstacles.
- barberry family — the plant family Berberidaceae, characterized by shrubs and herbaceous plants having very varied leaves and flowers and fruit in the form of a berry or capsule, and including the barberry, May apple, and Oregon grape.
- bare infinitive — an infinitive verb form without to, used with certain auxiliary verbs , as in I must go. All I did was ask. We might win.
- battery farming — the activity of using batteries for raising poultry
- belgian griffon — one of a variety of the Brussels griffon having a black or reddish-brown and black coat.
- bird of passage — If you refer to someone as a bird of passage, you mean that they are staying in a place for a short time before going to another place.
- board-certified — A doctor who is board-certified has passed tests and meets the standards of a board of specialists in their area of medicine.
- bohemian forest — a mountain range between the SW Czech Republic and SE Germany. Highest peak: Arber, 1457 m (4780 ft)
- branchial cleft — Zoology. one of a series of slitlike openings in the walls of the pharynx between the branchial arches of fishes and aquatic amphibians through which water passes from the pharynx to the exterior.
- breach of faith — a violation of good faith, confidence, or trust; betrayal: To abandon your friends now would be a breach of faith.
- britneyfication — the effect on clothes and fashions of following the revealing styles favoured by the US pop singer Britney Spears (born 1981)
- buffalo soldier — (formerly, especially among American Indians) a black soldier.
- bug fix release — (programming) A release which introduces no new features, but which merely aims to fix bugs in previous releases. All too commonly new bugs are introduced at the same time.
- bureau of mines — a division of the Department of the Interior, created in 1910, that studies the nation's mineral resources and inspects mines.
- butterfly chair — a lightweight chair consisting of a piece of canvas, leather, etc. slung from a framework of metal bars
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