17-letter words containing i, t, o
- adventure tourism — tourism involving activities that are physically challenging
- adverse selection — Adverse selection is a term used to describe the tendency of those in dangerous jobs or with high-risk lifestyles to want to take out life insurance.
- advocatus diaboli — devil's advocate
- aerial photograph — a photograph taken from the air
- aerobic digestion — Aerobic digestion is a process which uses bacteria and oxygen to break down organic and biological waste.
- aerothermodynamic — Of or pertaining to aerothermodynamics.
- affiliation order — (formerly) an order made by a magistrates' court that a man adjudged to be the father of an illegitimate child shall contribute a specified periodic sum towards the child's maintenance
- afternoon session — a part of an event taking place in the afternoon
- aftershave lotion — a lotion, usually styptic and perfumed, for application to the face after shaving
- against the clock — If you are doing something against the clock, you are doing it in a great hurry, because there is very little time.
- agathokakological — (nonce word) composed of both good and evil.
- age of discretion — the age at which a person is considered to be able to manage his or her own affairs
- agenbite of inwit — remorse of conscience
- agree to disagree — If two people who are arguing about something agree to disagree or agree to differ, they decide to stop arguing because neither of them is going to change their opinion.
- agricultural show — a display of agricultural equipment and livestock, often including competitions, entertainment, and a trade fair
- air-transportable — that can be transported by aircraft: air-transportable equipment.
- aircraft observer — U.S. Army. observer (def 4).
- aircraft-observer — someone or something that observes.
- algorithmic model — (programming) A method of estimating software cost using mathematical algorithms based on the parameters which are considered to be the major cost drivers. These estimate of effort or cost are based primarily on the size of the software or Delivered Source Instructions (DSI)s, and other productivity factors known as Cost Driver Attributes. See also Parametric Model.
- allende meteorite — a carbonaceous chondrite meteorite that fell over northern Mexico in 1969: one of the largest recorded falls of a stony meteorite.
- alligator snapper — a large, freshwater snapping turtle (Macroclemys temmincki) of the SE U.S. and the Mississippi Valley, found chiefly in rivers and bayous: it may weigh up to 100 kg (220 lb)
- alpha-fetoprotein — a protein that forms in the liver of the human fetus. Excessive quantities in the amniotic fluid and maternal blood may indicate spina bifida in the fetus; low levels may point to Down's syndrome
- alphaphotographic — Of or pertaining to alphaphotographics.
- altamonte springs — a city in central Florida.
- alternating group — the subgroup consisting of all even permutations, of the group of all permutations of a finite set.
- ambrette-seed oil — a yellow oil expressed from ambrette seeds, used as a fixative in the manufacture of perfume.
- american dog tick — a common tick, Dermacentor variabilis, that is the vector of Rocky Mountain spotted fever in the eastern U.S. and also carries tularemia.
- american football — American football is a game similar to rugby that is played by two teams of eleven players using an oval-shaped ball. Players try to score points by carrying the ball to their opponents' end of the field, or by kicking it over a bar fixed between two posts.
- amino-acid dating — a method used to date an organic geological or archaeological specimen, as a fossil or mummified body, by determining how much change has occurred in the amino-acid structure of that specimen.
- aminoglutethimide — a hormone antagonist, C 13 H 16 N 2 O 2 , used in the treatment of Cushing's syndrome and breast cancer.
- ammonium selenate — a colorless, crystalline, water-soluble solid, (NH 4) 2 SeO 4 , used as a mothproofing agent.
- ammonium stearate — a tan, waxlike, water-insoluble solid, C 18 H 39 NO 2 , used chiefly in the manufacture of cosmetics.
- ammonium sulphate — a white soluble crystalline solid used mainly as a fertilizer and in water purification. Formula: (NH4)2SO4
- amoebic dysentery — inflammation of the intestines caused by the parasitic amoeba Endamoeba histolytica
- amor vincit omnia — love conquers everything
- amphidromic point — a point of almost zero tidal fluctuation on the ocean surface, represented on a chart of cotidal lines by a point from which these lines radiate.
- an effort of will — If you do something difficult or painful by an effort of will, you manage to make yourself do it.
- anabolic steroids — a synthetic derivative of testosterone, sometimes used by athletes to help increase weight and strength.
- anachronistically — In an anachronistic manner; in the manner of an anachronism.
- anaesthesiologist — anesthesiology.
- anagrammatization — Transformation of a word, etc. into its anagram.
- analytic geometry — the branch of geometry in which a coordinate graphing system makes visible, using points, lines, and curves, the numerical relationships of algebraic equations
- andes (mountains) — mountain system extending the length of W South America: highest peak, Aconcagua
- aneroid barometer — a device for measuring atmospheric pressure without the use of fluids. It consists of a partially evacuated metal chamber, the thin corrugated lid of which is displaced by variations in the external air pressure. This displacement is magnified by levers and made to operate a pointer
- anesthesiologists — Plural form of anesthesiologist.
- angle of friction — the angle of a plane to the horizontal when a body placed on the plane will just start to slide. The tangent of the angle of friction is the coefficient of static friction
- anglo-catholicism — the tradition or form of worship in the Anglican Church that emphasizes Catholicity, the apostolic succession, and the continuity of all churches within the communion with pre-Reformation Christianity as well as the importance of liturgy and ritual.
- anglo-saxon point — ATA point
- angostura bitters — a bitter aromatic tonic made from gentian and various spices and vegetable colourings, used as a flavouring in alcoholic drinks
- anionic detergent — any of a class of synthetic compounds whose anions are alkali salts, as soap, or whose ions are ammonium salts.