10-letter words containing u, r, o
- ankylosaur — any of various quadrupedal herbivorous ornithischian dinosaurs constituting the suborder Ankylosauria, which were most abundant in upper Cretaceous times and had a very heavily armoured tanklike body
- announcers — Plural form of announcer.
- anoestrous — anestrous.
- anti-tumor — a swollen part; swelling; protuberance.
- antiarmour — designed or equipped to combat armoured vehicles
- antitorque — Describing the rotor on the tail of a helicopter that prevents the helicopter from spinning in a direction opposite to that of the main rotor blades.
- antitumour — preventing or acting against tumours
- apatosaurs — Plural form of apatosaur.
- apocarpous — (of the ovaries of flowering plants such as the buttercup) consisting of separate carpels
- aposporous — characterized by apospory
- apotropous — (of a plant ovule) anatrophous with a ventral raphe
- aquafortis — concentrated nitric acid, used for etching
- aquaporins — Plural form of aquaporin.
- aquiferous — conveying, containing or yielding water
- arboresque — a tree.
- arboretums — Plural form of arboretum.
- archemorus — Opheltes.
- archosaurs — Plural form of archosaur.
- arcosolium — (in Roman catacombs) an arched recess for a sarcophagus.
- areligious — unconcerned with or indifferent to religious matters.
- arenaceous — (of sedimentary rocks and deposits) composed of sand or sandstone
- argenteous — silvery.
- ariovistus — flourished c71–58 b.c, Germanic leader of the Suevi.
- armigerous — of, having, or entitled to have a coat of arms
- armourless — having no armour
- army group — the largest operational formation of military land forces, normally comprising two or more armies or army corps under a designated commander.
- arrow arum — a North American plant, Peltandra virginica, of wet areas, having large, arrow-shaped leaves and inconspicuous flowers enclosed in a narrow, pointed spathe.
- arse about — to play the fool; act stupidly, esp in an irritating manner
- artocarpus — a genus of the mulberry family, originating in Asia, species of which include the jackfruit and the breadfruit
- aryl group — any organic group derived from an aromatic hydrocarbon by the removal of a hydrogen atom, as phenyl, C 6 H 5 −, from benzene, C 6 H 6 .
- ascigerous — of or relating to asci.
- ask around — If you ask around or ask round, you ask several people a question.
- astronauts — Plural form of astronaut.
- attenuator — any device designed to reduce the power of a wave or electrical signal without distorting it
- attributor — to regard as resulting from a specified cause; consider as caused by something indicated (usually followed by to): She attributed his bad temper to ill health.
- au courant — up-to-date, esp in knowledge of current affairs
- auctionary — of or relating to auctions or auctioneers
- auctioneer — An auctioneer is a person in charge of an auction.
- audiograms — Plural form of audiogram.
- audiograph — a machine used to test a patient's hearing by transmitting sound waves directly to the inner ear
- audiometer — an instrument for testing the intensity and frequency range of sound that is capable of detection by the human ear
- audiometry — the testing of hearing by means of an audiometer.
- auditioner — a person who attends an audition
- auditorily — in an auditory manner, by hearing
- auditorium — An auditorium is the part of a theatre or concert hall where the audience sits.
- auguration — The practice of augury.
- aural-oral — audio-lingual.
- aureomycin — chlortetracycline
- auriferous — (of rock) containing gold; gold-bearing
- auriscopes — Plural form of auriscope.