13-letter words containing r, u, n, i
- abelian group — a group the defined binary operation of which is commutative: if a and b are members of an Abelian group then ab = ba
- acculturating — Present participle of acculturate.
- acculturation — the process of conditioning a child to the patterns or customs of a culture
- acne vulgaris — an inflammatory disease of the sebaceous glands, characterized by comedones and pimples, especially on the face, back, and chest, and, in severe cases, by cysts and nodules resulting in scarring.
- acne-vulgaris — an inflammatory disease of the sebaceous glands, characterized by comedones and pimples, especially on the face, back, and chest, and, in severe cases, by cysts and nodules resulting in scarring.
- acrimoniously — caustic, stinging, or bitter in nature, speech, behavior, etc.: an acrimonious answer; an acrimonious dispute.
- actinouranium — the isotope of uranium that has a mass number of 235
- action figure — a small figure of a character from a film, television programme, comic book etc, designed as a toy and often collected by enthusiasts
- acupuncturist — An acupuncturist is a person who performs acupuncture.
- adjutant bird — either of two large carrion-eating storks, Leptoptilos dubius or L. javanicus, which are closely related and similar to the marabou and occur in S and SE Asia
- admensuration — Admeasurement.
- adventuristic — relating to adventurism
- aerosinusitis — inflammation of the nasal sinuses caused by the effect on the sinuses of changes in atmospheric pressure.
- affirming gun — a gun fired by a warship to signal its intention to search a merchant vessel.
- african union — an organization of African states established in 2002 as successor to the OAU; it aims to encourage economic development and political stability through increased cooperation between its members
- agro-industry — the large-scale production, processing, and packaging of food using modern equipment and methods.
- air ambulance — An air ambulance is a helicopter or plane that is used for taking people to hospital.
- air pollution — contamination of the atmosphere
- air-to-ground — operating between an aircraft in flight and a target on the ground
- airplane rule — aeroplane rule
- airplane turn — a midair turn made in the middle of a jump.
- albumin color — (in textile printing) a color fixed to a fabric by an albuminous mordant.
- alfred austin — Alfred, 1835–1913, English poet: poet laureate 1896–1913.
- alphanumerics — Plural form of alphanumeric.
- alpine tundra — a tundra that is treeless because of high elevation rather than high latitude.
- aluminiferous — containing or yielding aluminium or alumina
- aluminography — algraphy.
- aluminothermy — a process for reducing metallic oxides using finely divided aluminium powder. The mixture of aluminium and the oxide is ignited, causing the aluminium to be oxidized and the metal oxide to be reduced to the metal
- amateur night — an entertainment featuring amateur performers, often in competition for prizes.
- american curl — a breed of slender cat with curled-back ears and a plumed tail
- aminoaciduria — the presence of amino acids in urine
- ancus marcius — a king of Rome, during whose reign the first bridge across the Tiber was constructed.
- anfractuosity — the condition or quality of being anfractuous
- angiospermous — of or relating to an angiosperm; having enclosed seeds.
- Ångstrom unit — a unit of length equal to 10 −10 metre, used principally to express the wavelengths of electromagnetic radiations. It is equivalent to 0.1 nanometre
- ante-christum — before Christ. Abbreviation: A.C.
- antenniferous — having antennae
- anthraquinone — a yellow crystalline solid used in the manufacture of dyes, esp anthraquinone dyes, which have excellent colour properties. Formula: C6H4(CO)2C6H4
- anti-burglary — the felony of breaking into and entering the house of another at night with intent to steal, extended by statute to cover the breaking into and entering of any of various buildings, by night or day.
- anti-cultural — of or relating to culture or cultivation.
- anti-european — opposed to the European Union or to political union of the countries of Europe
- anti-freudian — of or relating to Sigmund Freud or his doctrines, especially with respect to the causes and treatment of neurotic and psychopathic states, the interpretation of dreams, etc.
- anti-universe — a universe made up of antimatter, postulated to exist far out in space
- antiauthority — Opposed to authority.
- anticlinorium — a vast elongated anticline with its strata further folded into anticlines and synclines
- antidiuretics — Plural form of antidiuretic.
- antiguerrilla — acting against guerrilla activity
- antimarijuana — opposed to or acting against the use of marijuana
- antineutrinos — Plural form of antineutrino.
- antipruritics — Plural form of antipruritic.
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