13-letter words containing o, r, g, a
- anthropogenic — relating to anthropogenesis
- anthropologic — the science that deals with the origins, physical and cultural development, biological characteristics, and social customs and beliefs of humankind.
- anthropophagi — cannibals
- anthropophagy — cannibalism
- anthrozoology — The study of the interactions between humans and animals.
- anti-androgen — any of a class of drugs that oppose the action of androgens; used in the treatment of prostate cancer and various male sexual disorders
- antiforeigner — opposed to foreigners or foreign countries
- antilogarithm — a number whose logarithm to a given base is a given number
- antioestrogen — a drug that inhibits the activity of oestrogens
- antireligious — opposed to religious ideas, beliefs, and organizations
- apogeotropism — negative geotropism, as shown by plant stems
- appoggiaturas — Plural form of appoggiatura.
- appropriating — Present participle of appropriate.
- approximating — Present participle of approximate.
- apron strings — If you say that someone is tied to another person's apron strings, you mean that they are controlled or influenced too much by the other person.
- arc cotangent — the angle, measured in radians, that has a cotangent equal to a given number. Symbol: cot −1. Abbreviation: arc cot.
- archaelogical — Nonstandard spelling of archaeological.
- archaeologian — (archaic) An archaeologist.
- archaeologist — a specialist in archaeology, the scientific study of prehistoric peoples and their cultures by analysis of their artifacts, inscriptions, monuments, etc.
- archaezoology — the analysis and interpretation of animal remains found at archaeological sites
- archeological — of or relating to archaeology.
- archeologists — archaeology.
- archipelagoes — Plural form of archipelago.
- arcticologist — a person who specializes in arcticology.
- argentiferous — containing or bearing silver
- argilliferous — containing or yielding clay
- argumentation — Argumentation is the process of arguing in an organized or logical way, for example in philosophy.
- armor-plating — The armor-plating on a vehicle or building is the hard metal covering that is intended to protect it from gunfire and other missiles.
- arroyo grande — a town in SW California.
- arshile gorky — Arshile [ahr-sheel] /ˈɑr ʃil/ (Show IPA), (Vosdanig Adoian) 1904–48, American painter, born in Armenia.
- arteriography — the X-ray examination of an artery or arterial system after injection of a contrast medium into the bloodstream
- aryepiglottic — pertaining to or connecting the arytenoid cartilage and the epiglottis.
- aspergillosis — a rare fungal infection, esp of the mucous membranes or lungs, caused by various species of Aspergillus
- assyriologist — A person who studies ancient Assyria.
- astereognosis — inability to recognize objects by touch
- athenagoras i — (Aristocles Spyrou) 1886–1972, Archbishop Ecumenical of Constantinople and Ecumenical Patriarch of the Greek Orthodox Church 1948–72.
- atherogenesis — (medicine) The formation of atheromas, especially on the walls of the arteries.
- atomic energy — nuclear energy
- auctioneering — Present participle of auctioneer.
- audiographics — audiographic teleconferencing
- autobiography — Your autobiography is an account of your life, which you write yourself.
- autographical — Relating to, or used in, the process of autography.
- automatograph — a device for recording involuntary bodily movements.
- autoradiogram — autoradiograph
- bachelor girl — a young unmarried woman, esp one who is self-supporting
- backgrounders — Plural form of backgrounder.
- backgrounding — Present participle of background.
- backing group — a group of musicians providing an instrumental or vocal accompaniment for a pop singer
- backing store — a computer storage device, usually a disk, that provides additional storage space for information so that it can be accessed and referred to when required and may be copied into the processor if needed
- bacteriogenic — Caused by bacteria.