11-letter words containing a, t, r, o
- orchestrina — (musical instruments) orchestrion.
- ordainments — Plural form of ordainment.
- ordeal tree — any of several trees having poisonous seeds, leaves, etc., used in primitive trials by ordeal.
- order about — to bully or domineer
- ordinariate — Roman Catholic Church. (formerly) a province in which the faithful of an Eastern rite were under the rule of a prelate of their rite who had no territorial jurisdiction.
- ordinations — Plural form of ordination.
- organ point — a tone sustained by one part, usually the bass, while other parts progress without reference to it.
- organistrum — a stringed instrument played by two people
- orientalism — a peculiarity or idiosyncrasy of the peoples of Asia, especially the East.
- orientalist — A person (especially a scholar) interested in the orient.
- orientality — the state of being oriental
- orientalize — Alternative capitalization of Orientalize.
- orientating — Present participle of orientate.
- orientation — the act or process of orienting.
- orientative — the act or process of orienting.
- originalist — One who has, or tends to have, original ideas.
- originality — the quality or state of being original.
- originating — to take its origin or rise; begin; start; arise: The practice originated during the Middle Ages.
- origination — to take its origin or rise; begin; start; arise: The practice originated during the Middle Ages.
- originative — having or characterized by the power of originating; creative.
- originators — Plural form of originator.
- ornamentals — Plural form of ornamental.
- ornamenting — Present participle of ornament.
- ornamentist — a person who adorns or decorates, esp professionally
- ornithosaur — an extinct flying reptile
- orthoborate — (inorganic chemistry) Any anion derived from orthoboric acid; any salt containing this anion.
- orthocartan — (mathematics, tool) A system for symbolic mathematics, especially General Relativity, written by A. Krasinski of Warsaw in the early 1980s.
- orthoclases — Plural form of orthoclase.
- orthodontal — the branch of dentistry dealing with the prevention and correction of irregular teeth, as by means of braces.
- orthodontia — orthodontics.
- orthography — the art of writing words with the proper letters, according to accepted usage; correct spelling.
- orthonormal — (of a system of functions) normal; normalized.
- orthopaedic — of or relating to orthopedics.
- orthopraxia — the correction of deformities; orthopedics.
- orthopteran — orthopterous.
- orthostates — orthostat.
- orthostatic — relating to or caused by erect posture.
- oscillators — Plural form of oscillator.
- oscillatory — characterized by or involving oscillation.
- ostentators — Plural form of ostentator.
- osteodermal — characterized by osteoderms
- osteography — The scientific description of bones; osteology.
- ostracising — Present participle of ostracise.
- ostracizing — Simple past tense and past participle of ostracize.
- ostracoderm — any of several extinct jawless fishes of the Ordovician, Silurian, and Devonian periods, having the body enclosed in an armor of bony plates.
- ostreaceous — oyster-like
- ostreophage — someone who loves or eats oysters
- ostreophagy — the consumption of oysters
- other ranks — (in the armed forces) all those who do not hold a commissioned rank
- other woman — a woman who is romantically or sexually involved with another woman's husband or lover, especially a woman who is having an affair with a married man.