13-letter words containing n, a, c, o
- actor-manager — a leading actor who produces and usually stars in his or her own productions: Sir Henry Irving was one of the first actor-managers.
- actualisation — Alternative spelling of actualization.
- actualization — the act or process of actualizing.
- adenoidectomy — surgical removal of the adenoids
- adjudications — Plural form of adjudication.
- adrenalectomy — the surgical removal of one or both adrenal glands
- adultolescent — a young adult or middle-aged person who has interests, traits, etc., that are usually associated with teenagers.
- advance ratio — the ratio of wind speed along the axis of a rotor or propeller to the speed of the blade tip
- advection fog — fog caused by the movement of warm, moist air over a cold surface.
- advice column — In a newspaper or magazine, the advice column contains letters from readers about their personal problems, and advice on what to do about them.
- advocacy tank — a research and development institution that works to lobby government officials to adopt the institution's viewpoints.
- aerodynamical — relating to aerodynamics
- aeromagnetics — the science of measuring magnetic characteristics associated with atmospheric conditions of the earth.
- aeromechanics — the mechanics of gases, esp air
- affectionally — In an affectional manner.
- affectionated — Simple past tense and past participle of affectionate.
- affectionless — showing no affection or kindly disposition towards
- 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
- afro-american — African-American
- age allowance — an income tax allowance given to taxpayers aged 65 or over
- agonistically — in an agonistic manner
- agro-economic — of or relating to a nation's agricultural economy, the financial problems of farmers as a group, etc.: mounting pressures on the agro-economic system.
- agronomically — in an agronomic manner
- air force one — the US Air Force plane used by the US president
- air injection — injection of liquid fuel into the cylinder of an internal-combustion engine, especially a diesel, by means of a jet of compressed air.
- air-condition — to apply air conditioning to
- aircraftwoman — The female equivalent of an aircraftman.
- aircraftwomen — Plural form of aircraftwoman.
- albumin color — (in textile printing) a color fixed to a fabric by an albuminous mordant.
- alectryomancy — an ancient form of divination, using a rooster to select grains of food placed on letters of the alphabet.
- aleman lacayo — Jose Arnoldo [hoh-zey ahr-nohl-doh] /hoʊˈzeɪ ɑrˈnoʊl doʊ/ (Show IPA), 1946–2002, president of Nicaragua 1997–2002.
- all-consuming — taking up all of someone's time and attention
- allochthonous — (of rocks, deposits, etc) found in a place other than where they or their constituents were formed
- alluvial cone — a steep, narrow, cone-shaped alluvial fan formed where a swift stream suddenly slows down, as where an upland stream emerges abruptly into a level plain
- alonzo church — (person) A twentieth century mathematician and logician, and one of the founders of computer science. Church invented the lambda-calculus and posited a version of the Church-Turing thesis.
- alpine chough — a bird of the crow family, Pyrrocorax graculus, found in the highest mountain regions of S Europe and central Asia, with a yellow bill, black plumage, and red legs
- amarantaceous — amaranthine
- american aloe — century plant
- american bond — a brickwork bond having a course of headers between five or six courses of stretchers.
- american fork — a town in central Utah.
- amino radical — the univalent group, −NH 2 .
- aminoaciduria — the presence of amino acids in urine
- ammonia clock — an atomic clock based on the frequency of inversion of the ammonia molecule
- amniocenteses — Plural form of amniocentesis.
- amniocentesis — If a pregnant woman has an amniocentesis, fluid is removed from her womb in order to check that her unborn baby is not affected by certain genetic disorders.
- amphictyonies — Plural form of amphictyony.
- amphotericins — Plural form of amphotericin.
- amplification — the act or result of amplifying
- anachronistic — You say that something is anachronistic when you think that it is out of date or old-fashioned.
- anachronously — in an anachronous manner