13-letter words containing a, c
- adularescence — (of certain gemstones, especially adularia) having a milky, bluish luster.
- adultolescent — a young adult or middle-aged person who has interests, traits, etc., that are usually associated with teenagers.
- advance guard — a military unit sent ahead of a main body to find gaps in enemy defences, clear away minor opposition, and prevent unexpected contact
- advance party — a small group of soldiers who go ahead of the main body of troops to prepare the way for their arrival, or any group that does the same thing or arrives ahead of the main body
- 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.
- adventuristic — relating to adventurism
- adverb clause — a subordinate clause that functions as an adverb within a main clause.
- 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.
- aerial camera — a camera used to take pictures from the air
- 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
- aesthetically — in an aesthetic manner
- aestheticians — Plural form of aesthetician.
- aestheticized — Simple past tense and past participle of aestheticize.
- aestheticizes — Third-person singular simple present indicative form of aestheticize.
- affectability — the ability to be influenced or affected by something
- affectibility — The quality or state of being affectible.
- affectionally — In an affectional manner.
- affectionated — Simple past tense and past participle of affectionate.
- affectionless — showing no affection or kindly disposition towards
- affectiveness — The property of being affective.
- affenpinscher — a small wire-haired breed of dog of European origin, having tufts of hair on the muzzle
- affinity card — An affinity card is a type of credit card. The bank which issues the card gives a small amount of money to a charity or institution each time the customer spends a certain amount with their card.
- african daisy — any of several composite plants native to Africa, especially of the genera Arctotis, Gerbera, and Lonas, having showy, daisylike flowers.
- african grape — a watermelon.
- african plate — a major tectonic division of the earth's crust, comprising the African continent as well as adjacent ocean basins (the Canary, Cape Verde, Angola, Cape Agulhas, Somali, Madagascar, and Natal Basins), and bounded on the north by the Eurasian and Arabian Plates, on the east by mid-ocean ridges (the Southwest Indian, Mid-Indian, and Carlsberg Ridges), on the south by the Antarctic Plate, and on the west by the Mid-Atlantic Ridge.
- 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
- after-effects — harmful consequences, effects
- age allowance — an income tax allowance given to taxpayers aged 65 or over
- agonistically — in an agonistic manner
- agriculturist — an agricultural expert
- 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.
- agronomically — in an agronomic manner
- ahistorically — In an ahistorical way.
- ailurophiliac — Appropriate or pleasing to ailurophiles.
- air ambulance — An air ambulance is a helicopter or plane that is used for taking people to hospital.
- 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 discharge — Air discharge is a method for testing ESD-protection structures in which the ESD generator is discharged through an air gap between the generator and the device under test.
- 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.