13-letter words containing a, n, i

raison d'etat — a purely political reason for governmental action, based on the national interest and often violating principles of justice.
raison d'etre — reason or justification for being or existence: Art is the artist's raison d'être.
raking course — a concealed course of bricks laid diagonally to the wall surface in a raking bond.
rally driving — the sport of taking part in motor rallies
ramapithecine — of or relating to an extinct hominoid of the genus Ramapithecus
rambling club — a club for people who enjoy taking walks in the country
rambling rose — any of various cultivated hybrid roses that straggle over other vegetation
ramifications — the act or process of ramifying.
randomization — to order or select in a random manner, as in a sample or experiment, especially in order to reduce bias and interference caused by irrelevant variables; make random.
rank and file — the members of a group or organization apart from its leaders or officers.
rankine cycle — the hypothetical cycle of a steam engine in which all heat transfers take place at constant pressure and in which expansion and compression occur adiabatically.
rankine scale — William John Macquorn [muh-kwawrn] /məˈkwɔrn/ (Show IPA), 1820–70, Scottish engineer and physicist.
rapid transit — a system of public transportation in a metropolitan area, usually a subway or elevated train system.
ratiocination — the process of logical reasoning.
ratiocinative — the process of logical reasoning.
ration coupon — a coupon that can be exchanged for a certain quantity of rationed goods
rational form — a quotient of two polynomials with integral coefficients.
rationalistic — the principle or habit of accepting reason as the supreme authority in matters of opinion, belief, or conduct.
rattlebrained — foolish; flighty; scatterbrained.
ratushinskaya — Irina (ɪˈriːnə). born 1954, Russian poet and writer: imprisoned (1983–86) in a Soviet labour camp on charges of subversion. Her publications include Poems (1984), Grey is the Colour of Hope (1988), and The Odessans (1992)
ray tomlinson — (person) An engineer at Bolt Beranek and Newman who, in July 1972 while designing the first[?] electronic mail program, chose the commercial at symbol "@" to separate the user name from the computer name.
re-absorption — resorption (def 2).
re-activation — to render active again; revive.
re-admittance — permission or right to enter: admittance into the exhibit room.
re-alienation — the act of alienating, or of causing someone to become indifferent or hostile: The advocacy group fights against prejudice and social alienation of immigrants.
re-allocation — the act of allocating; apportionment.
re-entry visa — a visa that allows someone to enter a country again several times
re-escalation — the act of re-escalating
re-evaluating — to determine or set the value or amount of; appraise: to evaluate property.
re-evaluation — an act or instance of evaluating or appraising.
re-forwarding — toward or at a place, point, or time in advance; onward; ahead: to move forward; from this day forward; to look forward.
re-regulation — a law, rule, or other order prescribed by authority, especially to regulate conduct.
reacquainting — to make more or less familiar, aware, or conversant (usually followed by with): to acquaint the mayor with our plan.
reacquisition — the act of acquiring or gaining possession: the acquisition of real estate.
reaction rate — The reaction rate is the speed at which a reaction happens, measured by the speed at which the feed is consumed or the speed at which the product is formed.
reaction time — the interval between stimulation and response.
reactionarism — of, pertaining to, marked by, or favoring reaction, especially extreme conservatism or rightism in politics; opposing political or social change.
reading chair — a chair of the 18th century having an adjustable reading stand attached to the back and a crest rail extending forward on both sides to form armrests, designed to be sat on facing the back.
reading glass — a magnifying glass that people use to enlarge text to make it easier to read
reading group — a group of people who meet regularly to discuss a book that they have all read
reading light — any small electric light that you use for reading. You can usually move it in order to direct the light to where you need it for reading. It can be attached to a wall or shelf in the home, or be above your head inside an aircraft or other vehicle.
reading speed — the rate at which something is read, often expressed in terms of words per minute. Reading speed is usually determined by the purpose of reading (for comprehension, learning, memorization, etc)
reaffirmation — the act or an instance of affirming; state of being affirmed.
reagent strip — A reagent strip is a thin piece of paper impregnated with a reagent (= a substance that causes a chemical reaction) to a specific substance, used in testing for that substance in a body of fluid.
reaggregation — the act or process of reaggregrating something
reapplication — an act or the process of reapplying a substance
reappointment — a fixed mutual agreement for a meeting; engagement: We made an appointment to meet again.
reasonability — agreeable to reason or sound judgment; logical: a reasonable choice for chairman.
reassignation — an appointment for a meeting, especially a lover's secret rendezvous.
reassociation — an organization of people with a common purpose and having a formal structure.

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