13-letter words containing a, t, o, r
- aerodontalgia — a toothache caused by lowered barometric pressure, as in high-altitude flight.
- aerogenerator — a generator that is driven by winds
- aerolithology — the science of aerolites
- aeromagnetics — the science of measuring magnetic characteristics associated with atmospheric conditions of the earth.
- aerophilately — the study or collection of airmail stamps, cancellations, etc.
- aerosinusitis — inflammation of the nasal sinuses caused by the effect on the sinuses of changes in atmospheric pressure.
- aerostructure — any separately manufactured unit, component, or section of an aircraft or other vehicle capable of flight
- 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.
- afternoon tea — Afternoon tea is a small meal you can have in the afternoon. It includes a cup of tea and food such as sandwiches and cakes.
- afterthoughts — Plural form of afterthought.
- 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-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.
- agroecologist — One who studies agroecology.
- agrostography — a treatise on grasses.
- 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.
- 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
- 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.
- albertosaurus — A giant fierce carnivorous tyrannosaurus-like dinosaur, of gemus Albertosaurus, discovered in Alberta, Canada.
- 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
- aldosteronism — high blood pressure caused by excess aldosterone in the blood and urine
- alectryomancy — an ancient form of divination, using a rooster to select grains of food placed on letters of the alphabet.
- all over with — above in place or position: the roof over one's head.
- all-important — crucial; vital
- 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.
- alphabetiform — having similarities to letters of the alphabet
- alstroemerias — Plural form of alstroemeria.