13-letter words containing o, r, a, i
- affordability — that can be afforded; believed to be within one's financial means: attractive new cars at affordable prices.
- afforestation — Afforestation is the process of planting large numbers of trees on land which has few or no trees on it.
- aformentioned — Misspelling of aforementioned.
- 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
- aggiornamento — the process of bringing up to date methods, ideas, etc
- agglomeration — An agglomeration of things is a lot of different things gathered together, often in no particular order or arrangement.
- agglomerative — gathered together into a cluster or mass.
- aggradational — (geology) Pertaining to or formed by aggradation.
- aggregational — resulting from aggregation
- 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.
- agro-industry — the large-scale production, processing, and packaging of food using modern equipment and methods.
- agrobacterium — A soil bacterium, of the genus Agrobacterium, which can fix nitrogen, and causes the formation of crown galls in plants.
- agrobiologist — One who studies bacteria and other organisms in soil for the purpose of growing crops or feeding animals.
- agrochemicals — Plural form of agrochemical.
- agroecologist — One who studies agroecology.
- agronomically — in an agronomic manner
- agrostologist — a person who specializes in agrostology
- agroterrorism — the use of biological agents as weapons against agricultural and food-supply industries
- ahistorically — In an ahistorical way.
- ailurophiliac — Appropriate or pleasing to ailurophiles.
- 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.
- air pollution — contamination of the atmosphere
- air-condition — to apply air conditioning to
- air-to-ground — operating between an aircraft in flight and a target on the ground
- aircraftwoman — The female equivalent of an aircraftman.
- aircraftwomen — Plural form of aircraftwoman.
- airline pilot — a person who flies planes as a profession and works for a commercial airline
- airplane mode — a setting on a phone or other mobile device that turns off Wi-Fi, cellular, and other wireless connections.
- airport novel — People sometimes refer to long novels such as thrillers and romances that are written in a popular style as airport novels.
- airworthiness — (of an aircraft) meeting established standards for safe flight; equipped and maintained in condition to fly.
- albumin color — (in textile printing) a color fixed to a fabric by an albuminous mordant.
- aldosteronism — high blood pressure caused by excess aldosterone in the blood and urine
- all over with — above in place or position: the roof over one's head.
- all-important — crucial; vital
- 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
- alligator gar — a large, heavily scaled fish, Lepisosteus spatula, with an elongated body and long snout, found mainly in shallow weedy fresh water in the southeastern U.S.
- alligatorfish — a slender marine fish, Aspidophoroides monopterygius, of Atlantic seas, having overlapping plates covering the body.
- alliterations — Plural form of alliteration.
- allochromatic — Physical Chemistry. pertaining to or having photochemical properties resulting from an impurity or from exposure to radiation.
- allotriomorph — (geology) A mineral that did not develop its otherwise typical external crystal form because of late crystallization between earlier formed crystals, typical of matrix minerals in rapidly crystallizing volcanic lavas and shallow igneous intrusions.
- allotriophagy — (rare) Having food cravings that are different from the expected or the norm.
- allylthiourea — thiosinamine.
- alpha orionis — Betelgeuse
- alpha scorpii — Antares
- alphabetiform — having similarities to letters of the alphabet