9-letter words containing a, c, o, s
- audacious — Someone who is audacious takes risks in order to achieve something.
- auriscope — a medical instrument for examining the external ear
- auriscopy — (medicine) Examination of the ear using an auriscope.
- autecious — autoecious
- autocrats — Plural form of autocrat.
- autocross — a form of motor sport in which cars race over a half-mile circuit of rough grass
- autoecism — the development of the entire life cycle of a parasitic fungus on a single host or group of hosts.
- autofocus — a device that focuses a lens, camera, etc. automatically
- autoicous — (of plants, esp mosses) having male and female reproductive organs on the same plant
- autolycus — a crater in the NW quadrant of the moon about 38 km in diameter and 3000 m deep
- autoscope — An optical instrument for examining one's own eye.
- autoscopy — the experience of hallucination in which one sees oneself from outside one's own body
- avocadoes — Alternative spelling of avocados Plural form of avocado.
- bachelors — Plural form of bachelor.
- backbones — Plural form of backbone.
- backcross — to mate (a hybrid of the first generation) with one of its parents
- backdowns — Plural form of backdown.
- backdrops — Plural form of backdrop.
- backflows — Plural form of backflow.
- backhouse — an outdoor privy; outhouse
- backroads — Plural form of backroad.
- backrooms — Plural form of backroom.
- backshore — the area of a beach above the usual high tide mark
- backsolve — To determine the inputs that would lead to a given output in a mathematical system.
- backstops — Plural form of backstop.
- backstory — the events which take place before, and which help to bring about, the events portrayed in a film
- backsword — a person who uses the backsword
- backwoods — If you refer to an area as the backwoods, you mean that it is a long way from large towns and is isolated from modern life.
- backwords — Plural form of backword.
- balconies — Plural form of balcony.
- ballcocks — Plural form of ballcock.
- balsamico — Balsamic vinegar.
- barachois — (in the Atlantic Provinces of Canada) a shallow lagoon formed by a sand bar
- baroscope — any instrument for measuring atmospheric pressure, esp a manometer with one side open to the atmosphere
- barouches — Plural form of barouche.
- base coat — the first coat of paint applied to a prepared surface
- basestock — Refined petroleum oil with no additives.
- basilicon — any of a variety of healing ointments applied to wounds in early medicine, commonly using lard or oil, resin, and wax
- bibacious — tending to drink in excess
- bicoastal — Someone or something that is bicoastal lives or occurs on both the east coast and the west coast of the U.S.
- biosocial — relating to the interaction of biological and social elements
- biostatic — the branch of biology dealing with the structure of organisms in relation to their functions (opposed to biodynamics).
- bodacious — If you say that someone or something is bodacious, you mean that they are very good or impressive.
- bombastic — If you describe someone as bombastic, you are criticizing them for trying to impress other people by saying things that sound impressive but have little meaning.
- bookstack — Usually, bookstacks. stack (def 4).
- bop stack — A BOP stack is one of two or more units which control well pressure, and contain the wellhead and blowout preventers.
- boschvark — a bush pig of S Africa
- broachers — Machinery. an elongated, tapered, serrated cutting tool for shaping and enlarging holes.
- broadcast — A broadcast is a programme, performance, or speech on the radio or on television.
- bush coat — a belted, hip-length, shirtlike jacket, usually with four patch pockets and a notched collar, adapted from the hunting coat customarily worn in the African bush.