13-letter words containing c, o, a, e
- active optics — a system to compensate for any deformation caused by gravity in the surface accuracy and alignment of the mirrors of an astronomical telescope by means of actuators that control the movable mirror supports
- active reason — an activity of intellect, embodying universal truth, potentially present in the mind of every individual, and when present, forming the only immortal part of the individual.
- 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.
- adenoidectomy — surgical removal of the adenoids
- 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.
- aeroacoustics — the study of the generation and transmittance of sound by fluid flow
- 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
- aerostructure — any separately manufactured unit, component, or section of an aircraft or other vehicle capable of flight
- affectionally — In an affectional manner.
- affectionated — Simple past tense and past participle of affectionate.
- affectionless — showing no affection or kindly disposition towards
- afro-american — African-American
- age allowance — an income tax allowance given to taxpayers aged 65 or over
- 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.
- agrobacterium — A soil bacterium, of the genus Agrobacterium, which can fix nitrogen, and causes the formation of crown galls in plants.
- agrochemicals — Plural form of agrochemical.
- agroecologist — One who studies agroecology.
- air commodore — a senior officer of the Royal Air Force and certain other air forces, of equivalent rank to brigadier in the Army
- air core coil — having a nonmagnetic core, as one of fiber or plastic, encircled by a coil (air-core coil) or containing one or more such coils: air-core transformer.
- 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.
- aircraftwomen — Plural form of aircraftwoman.
- alcohol abuse — the excessive consumption of alcoholic drinks
- alcoholometer — an instrument, such as a specially calibrated hydrometer, for determining the percentage of alcohol in a liquid
- alcoholometry — the process of measuring the concentration of alcohol in a liquid, such as in blood or a liquor
- 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.
- allegorically — consisting of or pertaining to allegory; of the nature of or containing allgegory; figurative: an allegorical poem; an allegorical meaning.
- allelomorphic — relating to alleles
- allowable cut — the amount of a natural resource, as grain or oil, that may be harvested or taken from the earth within a specified period, as limited by law for conservation.
- 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
- alpha blocker — any of various substances that interfere with the action of the alpha receptors.
- alpha-blocker — any of a class of drugs that prevent the stimulation of alpha adrenoceptors, a type of receptor in the sympathetic nervous system, by adrenaline and noradrenaline and that therefore cause widening of blood vessels: used in the treatment of high blood pressure and prostatic hyperplasia
- alphabet code — a list of easily distinguishable words, each representing a letter of the alphabet, used in radio and telephonic communications.
- 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
- alsike clover — a European clover, Trifolium hybridum, having pink flowers, grown in the U.S. for forage.
- altered chord — a chord in which one or more notes are chromatically changed by the introduction of accidentals
- alumosilicate — (inorganic chemistry) The anion [AlSiO4]-1.
- alveolar arch — the part of the upper or lower jawbone in which the teeth are set.
- 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.
- amniocenteses — Plural form of amniocentesis.