10-letter words containing u, r, a, s
- anarthrous — having no joints or articulated limbs
- anatropous — (of a plant ovule) inverted during development by a bending of the stalk (funicle) attaching it to the carpel wall
- andropause — the period, usually occurring between the ages of 45 and 55, during which a man's testosterone levels may fall, leading to a reduction in vigour and sexual drive
- aneurismal — Alternative spelling of aneurysmal.
- aneurysmal — a permanent cardiac or arterial dilatation usually caused by weakening of the vessel wall.
- 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.
- ant-thrush — any of several antbirds, especially of the genus Formicarius.
- anthersmut — a species of parasitic fungus, Ustilago violacea
- anthuriums — Plural form of anthurium.
- anti-virus — Anti-virus software is software that protects a computer against viruses.
- antiquarks — Plural form of antiquark.
- antiserums — Plural form of antiserum.
- antitragus — a cartilaginous projection of the external ear opposite the tragus
- 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.
- aquarelles — Plural form of aquarelle.
- aquiferous — conveying, containing or yielding water
- arabesqued — decorated with arabesques
- arabesques — Plural form of arabesque.
- arboresque — a tree.
- arboretums — Plural form of arboretum.
- arbuscular — relating to, or similar to, arbuscles
- arcesilaus — 316–241 b.c, Greek philosopher.
- archemorus — Opheltes.
- archosaurs — Plural form of archosaur.
- arcosolium — (in Roman catacombs) an arched recess for a sarcophagus.
- arcubalist — an arbalest
- area study — anthropological or sociological research intended to gather and relate data on various aspects of a geographical region and its inhabitants, as natural resources, history, language, institutions, or cultural and economic characteristics; a field investigation into human ecology.
- areligious — unconcerned with or indifferent to religious matters.
- arenaceous — (of sedimentary rocks and deposits) composed of sand or sandstone
- arenavirus — any of various RNA-containing viruses of the family Arenaviridae, usually transmitted to humans by contact with excreta of infected rodents.
- argenteous — silvery.
- argus-eyed — keen-sighted; observant; vigilant
- arguteness — acuteness of mind
- ariovistus — flourished c71–58 b.c, Germanic leader of the Suevi.
- aristippus — ?435–?356 bc, Greek philosopher, who believed pleasure to be the highest good and founded the Cyrenaic school
- armigerous — of, having, or entitled to have a coat of arms
- armourless — having no armour
- army-issue — given to soldiers in order to help them carry out their duties
- arquebuses — Plural form of arquebuse.
- arse about — to play the fool; act stupidly, esp in an irritating manner
- artesunate — (medicine) A drug, of the artemisinin group, used to treat malaria.
- artfulness — slyly crafty or cunning; deceitful; tricky: artful schemes.
- artocarpus — a genus of the mulberry family, originating in Asia, species of which include the jackfruit and the breadfruit