13-letter words containing t, i, o, n
- administrador — (historical) A steward or official in various Spanish- and Portuguese-speaking countries.
- administrator — An administrator is a person whose job involves helping to organize and supervise the way that an organization or institution functions.
- admonishments — Plural form of admonishment.
- 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.
- aerodontalgia — a toothache caused by lowered barometric pressure, as in high-altitude flight.
- aeromagnetics — the science of measuring magnetic characteristics associated with atmospheric conditions of the earth.
- aerosinusitis — inflammation of the nasal sinuses caused by the effect on the sinuses of changes in atmospheric pressure.
- affectionally — In an affectional manner.
- affectionated — Simple past tense and past participle of affectionate.
- affectionless — showing no affection or kindly disposition towards
- 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.
- 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.
- agglutination — the act or process of agglutinating
- agglutinogens — Plural form of agglutinogen.
- aggradational — (geology) Pertaining to or formed by aggradation.
- aggregational — resulting from aggregation
- agonistically — in an agonistic manner
- agro-industry — the large-scale production, processing, and packaging of food using modern equipment and methods.
- 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.
- ajax mountain — a peak on the Idaho-Montana border, in the Bitterroot Range of the Rocky Mountains. 10,900 feet (3,324 meters).
- aldosteronism — high blood pressure caused by excess aldosterone in the blood and urine
- all-important — crucial; vital
- alliterations — Plural form of alliteration.
- aluminothermy — a process for reducing metallic oxides using finely divided aluminium powder. The mixture of aluminium and the oxide is ignited, causing the aluminium to be oxidized and the metal oxide to be reduced to the metal
- amalgamations — Plural form of amalgamation.
- ambient noise — the level of the total noise in an area
- ambitiousness — having ambition; eagerly desirous of achieving or obtaining success, power, wealth, a specific goal, etc.: ambitious students.
- amenhotep iii — Greek name Amenophis. ?1411–?1375 bc, Egyptian pharaoh who expanded Egypt's influence by peaceful diplomacy and erected many famous buildings
- aminobenzoate — (organic chemistry) Any salt or ester of aminobenzoic acid.
- aminothiazole — (chemistry) A heterocyclic amine, the starting point for synthesis of many compounds, sometimes used as a thyroid inhibitor in the treatment of hyperthyroidism.
- aminotriazole — a white, crystalline, soluble powder, NHNC(NH2)NCH, used for killing weeds or other undesired vegetation: a carcinogen
- ammonia water — ammonia (def 2).
- ammonium salt — any salt containing the NH 4 + ion, formed by the neutralization of ammonium hydroxide by an acid.
- 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.
- amphitryon 38 — a play (1938) by Jean Giraudoux.
- amphotericins — Plural form of amphotericin.
- amplification — the act or result of amplifying