12-letter words containing a, r
- antinarcotic — Opposing or countering narcotics.
- antineuritic — inflammation of a nerve.
- antineutrino — the antiparticle of a neutrino; a particle having oppositely directed spin to a neutrino, that is, spin in the direction of its momentum
- antineutrons — Plural form of antineutron.
- antinutrient — a substance that interferes with the utilization of one or more nutrients by the body, as oxalate and phytate, which prevent calcium absorption.
- antiparabema — either of two chapels at the west end of an Armenian or Byzantine church.
- antiparallel — parallel but pointing in the opposite direction
- antiparticle — any of a group of elementary particles that have the same mass and spin as their corresponding particle but have opposite values for all other nonzero quantum numbers. When a particle collides with its antiparticle, mutual annihilation occurs
- antiperiodic — efficacious against recurring attacks of a disease
- antiphrastic — relating to antiphrasis
- antipleasure — opposed to pleasure
- antipredator — discouraging or protecting against predators
- antipruritic — acting against or preventing itching
- antipyretics — Plural form of antipyretic.
- antiquarians — Plural form of antiquarian.
- antirachitic — preventing or curing rickets
- antirational — opposed to rationalism
- antireformer — One who opposes reform.
- antireligion — opposed to religion
- antiroll bar — a horizontal bar in the suspension system of some automotive vehicles, that stabilizes the body of the vehicle and thereby reduces sway, esp. during turns
- antiromantic — opposed to romanticism
- antiroyalism — Opposition to royals or royalism.
- antiroyalist — opposed to the monarchy
- antirrhinums — Plural form of antirrhinum.
- antispinward — (often science fiction) In a rotating reference frame, against the direction of spin.
- antistrophes — Plural form of antistrophe.
- antistrophic — Of or pertaining to an antistrophe.
- antistrophon — an argument that is retorted against an opponent
- antisway bar — stabilizer bar.
- antisymmetry — the correspondence in size, form, and arrangement of parts on opposite sides of a plane, line, or point; regularity of form or arrangement in terms of like, reciprocal, or corresponding parts.
- antitakeover — opposed to or acting against a takeover
- antithrombin — a substance that counteracts the action of thrombin, preventing the formation of blood clots
- antitumoural — acting against or upon tumours
- anton sailer — Anton [ahn-tohn] /ˈɑn toʊn/ (Show IPA), ("Toni") 1935–2009, Austrian skier.
- antwerp blue — any of several iron-blue pigments, usually containing a considerable amount of extender.
- anuradhapura — a town in Sri Lanka: ancient capital of Ceylon; site of the sacred bo tree and place of pilgrimage for Buddhists. Pop: 53 151 (2001)
- anzus treaty — Australia, New Zealand, and the United States, especially as associated in the mutual defense treaty (ANZUS Pact or ANZUS Treaty) of 1952.
- aortic valve — a semilunar valve between the aorta and the left ventricle of the heart that prevents the blood from flowing back into the left ventricle.
- aortographic — relating to an aortography or aortography
- apartmentize — to build apartments on or in: to apartmentize the downtown area.
- apeirophobia — The fear of infinity and/or of infinite things.
- aperiodicity — not periodic; irregular.
- apfelstrudel — apple strudel
- aphoristical — Alternative form of aphoristic.
- aphrodisiacs — Plural form of aphrodisiac.
- apiculturist — beekeeping, especially on a commercial scale for the sale of honey.
- aplacophoran — solenogaster.
- apochromatic — (of a lens) almost free from spherical and chromatic aberration
- apocryphally — In an apocryphal manner.
- apostle bird — a gregarious grey-and-brown Australian nest-building bird, Struthidea cinerea