11-letter words containing a, c, t, o
- atomic mass — the mass of an isotope of an element in atomic mass units
- atomic pile — nuclear reactor
- atomtronics — (physics) The design, manufacture and study of analogs of electronics using atoms (especially Bose-Einstein condensates) at low temperature.
- atrociously — extremely or shockingly wicked, cruel, or brutal: an atrocious crime.
- attic order — a low pilaster of any order set into the cornice of a building
- attophysics — the physics of structures and artefacts with dimensions in the attometre range or of devices, such as lasers, capable of producing pulses with a duration measured in attoseconds
- attractions — Plural form of attraction.
- auction off — If you auction off something, you sell it to the person who offers the most money for it, often at an auction.
- auctioneers — Plural form of auctioneer.
- audiometric — the testing of hearing by means of an audiometer.
- austromancy — Soothsaying, or prediction of events, from observation of the winds or cloud formations.
- authorcraft — the skilled ability of an author
- auto racing — the sport of racing automobiles in which drivers compete against each other on a course designed for racing or on closed public roads.
- auto-erotic — producing sexual excitement or pleasure without association with another person or external stimulation.
- autocephaly — the state of being autocephalous.
- autochanger — a device in a record player or CD player that enables a small stack of records or CDs to be dropped automatically onto the turntable or player tray one at a time and played separately
- autochthons — Plural form of autochthon.
- autochthony — pertaining to autochthons; aboriginal; indigenous (opposed to heterochthonous).
- autoclaving — Present participle of autoclave.
- autocorrect — a function that attempts to correct errors made by the user when entering text into an electronic device
- autocracies — Plural form of autocracy.
- autodidacts — Plural form of autodidact.
- autodynamic — Supplying its own power.
- autofocuses — Third-person singular simple present indicative form of autofocus.
- autogenetic — self-generated.
- autographic — of, for, or like an autograph or autographs
- autokinetic — automatically self-moving
- autological — (grammar) Of a phrase (especially an adjective), possessing the property it describes.
- automagical — (of a usually complicated technical or computer process) done, operating, or happening in a way that is hidden from or not understood by the user, and in that sense, apparently “magical”: I just downloaded an automagical update to my word processing software that somehow fixed the problems.
- automatical — Archaic form of automatic.
- automorphic — shaped and designed after oneself
- autonomical — autonomous.
- autoplastic — Of or pertaining to autoplasty.
- autopotamic — (of an organism) living or growing only in flowing freshwater streams.
- autotrophic — (of organisms such as green plants) capable of manufacturing complex organic nutritive compounds from simple inorganic sources such as carbon dioxide, water, and nitrates, using energy from the sun
- auxotrophic — designating or of a mutant organism requiring more nutritional substances than its prototrophic parent because it has lost the ability to make a certain enzyme
- avocational — of or relating to avocation
- axiomatical — Of or pertaining to an axiom; having the nature of an axiom; characterized by axioms.
- axonometric — of or relating to a projection method of representing three-dimensional objects on a flat surface
- azotobacter — any bacterium of the family Azotobacteriaceae, important in nitrogen fixation in the soil
- back and to — back-and-forth; to and fro.
- back out of — to withdraw from (an enterprise)
- backcountry — an area far from cities and towns that is thinly populated and largely undeveloped; hinterland
- backside-to — backend-to.
- backstopped — Simple past tense and past participle of backstop.
- backstopper — a wall, wire screen, or the like, serving to prevent a ball from going too far beyond the normal playing area.
- backstroker — a person who swims the backstroke, especially a member of a competitive swimming team who specializes in the backstroke.
- backstrokes — Plural form of backstroke.
- bacteriocin — any protein-based toxin given off by bacteria to prevent the growth of related bacteria nearby
- bacteriosis — any bacterial disease