11-letter words containing s, e, r, o
- arborescent — having the shape or characteristics of a tree
- arborvitaes — Plural form of arborvitae.
- arboviruses — Plural form of arbovirus.
- archaeornis — an extinct primitive Jurassic bird, formerly placed in the genus Archaeornis but now thought to be a species of archaeopteryx
- archdeacons — Plural form of archdeacon.
- archdiocese — An archdiocese is the area over which an archbishop has control.
- arduousness — requiring great exertion; laborious; difficult: an arduous undertaking.
- arenicolous — growing or living in sand or sandy places
- aristoteles — a walled plain in the first quadrant of the face of the moon: about 60 miles (97 km) in diameter.
- arkeologist — Someone who studies the story of Noah's Ark, particularly by searching for physical evidence which would corroborate it.
- armageddons — Plural form of armageddon.
- aron kodesh — Holy Ark.
- arrestation — the slowing or stopping of the development or progress of something
- ars poetica — the art of poetry
- arse around — If you say that someone is arsing around or arsing about, you mean that they are behaving in a silly, irritating way instead of getting something done.
- arthrodesis — the fusion of bones in a joint through surgery which causes immobility of the joint
- arthroscope — a tubular instrument that is inserted into the capsule of a joint to examine the joint, extract tissue, etc
- arthrospore — a sporelike cell of ascomycetous fungi and some algae produced by a breaking of the hyphae
- as concerns — in regard to; with reference to; about
- as you were — a military command to withdraw an order, return to the previous position, etc
- asbestiform — having the look or structure of asbestos
- asperations — Plural form of asperation.
- aspergation — the action of sprinkling, suffusing or irrigating with water
- aspersorium — a basin containing holy water with which worshippers sprinkle themselves
- assertation — An assertion, statement of opinion.
- assessorial — a person who makes assessments, especially for purposes of taxation.
- assortative — Denoting or involving the preferential mating of animals or marrying of people with similar characteristics.
- assortments — Plural form of assortment.
- asteraceous — belonging to the Asterasceae, an alternative name for the plant family Compositae.
- asteroidean — an echinoderm of the class Asteroidea, comprising the starfishes.
- asteropaeus — a Trojan ally slain by Achilles.
- astroblemes — Plural form of astrobleme.
- astrologers — Plural form of astrologer.
- astromancer — divination by means of the stars.
- astrometric — (astronomy) of or relating to astrometry.
- astronomers — Plural form of astronomer.
- astronomize — to practise or study astronomy or engage in astronomical matters
- astrosphere — the part of the aster excluding the centrosome
- at a stroke — If something happens at a stroke or in one stroke, it happens suddenly and completely because of one single action.
- athermanous — capable of stopping radiant heat or infrared radiation
- atmosphered — having an intellectual or psychological climate or feeling
- atmospheres — Plural form of atmosphere.
- atmospheric — Atmospheric is used to describe something which relates to the Earth's atmosphere.
- atramentous — similar to or as black as ink
- attenuators — Plural form of attenuator.
- attorneyism — the slyness and cleverness associated with attorneys
- auctioneers — Plural form of auctioneer.
- audiometers — Plural form of audiometer.
- austronesia — the islands of the central and S Pacific, including Indonesia, Melanesia, Micronesia, and Polynesia
- authorities — the power to determine, adjudicate, or otherwise settle issues or disputes; jurisdiction; the right to control, command, or determine.