13-letter words containing a, r, i, s
- androdioecism — the state of being androdioecious
- anfractuosity — the condition or quality of being anfractuous
- angiosarcomas — Plural form of angiosarcoma.
- angiospermous — of or relating to an angiosperm; having enclosed seeds.
- Ångstrom unit — a unit of length equal to 10 −10 metre, used principally to express the wavelengths of electromagnetic radiations. It is equivalent to 0.1 nanometre
- animadversion — criticism or censure
- animal rights — People who are concerned with animal rights believe very strongly that animals should not be exploited or harmed by humans.
- animal starch — glycogen.
- anise camphor — anethole.
- anisometropia — an imbalance in the power of the two eyes to refract light
- anisometropic — relating to anisometropia
- anna christie — a play (1921) by Eugene O'Neill.
- anniversaries — Plural form of anniversary.
- answerability — liable to be asked to give account; responsible: He is answerable to a committee for all his decisions.
- ante-christum — before Christ. Abbreviation: A.C.
- antenniferous — having antennae
- anti-macassar — a small covering, usually ornamental, placed on the backs and arms of upholstered furniture to prevent wear or soiling; a tidy.
- anti-sway bar — antiroll bar
- anti-universe — a universe made up of antimatter, postulated to exist far out in space
- antiarthritis — acting against arthritis
- antichristian — Pertaining to Antichrist.
- anticorrosion — the prevention or counteracting of corrosion
- anticorrosive — preventing corrosion
- antidiuretics — Plural form of antidiuretic.
- antielectrons — Plural form of antielectron.
- antiformalist — opposed to formalism
- antimacassars — Plural form of antimacassar.
- antimodernism — modern character, tendencies, or values; adherence to or sympathy with what is modern.
- antimodernist — opposed to modernism
- antineutrinos — Plural form of antineutrino.
- antioestrogen — a drug that inhibits the activity of oestrogens
- antiparasitic — acting against infection by parasites
- antiparticles — Plural form of antiparticle.
- antipersonnel — (of weapons, etc) designed to cause casualties to personnel rather than to destroy equipment or defences
- antiphonaries — Plural form of antiphonary.
- antipruritics — Plural form of antipruritic.
- antirecession — acting against recession
- antireformers — Plural form of antireformer.
- antireligious — opposed to religious ideas, beliefs, and organizations
- antiresonance — a phenomenon in an electric, acoustic, or other such system in which the impedance is tending to infinity.
- antiritualism — opposed to ritualism
- antiscorbutic — preventing or curing scurvy
- antisense rna — molecules transcribed, not from DNA in the usual way, but from DNA strands complementary to those that produce normal messenger RNA. Antisense RNA occurs in nature and is inhibitory on gene action. It can be produced synthetically and offers such therapeutic possibilities as turning off viral genes
- antisterility — free from living germs or microorganisms; aseptic: sterile surgical instruments.
- antisubmarine — (of weapons, missiles, etc) designed to combat or destroy submarines
- antisudorific — an antiperspirant.
- antisymmetric — (of a relation) never holding between a pair of arguments x and y when it holds between y and x except when x = y, as "…is no younger than…"
- antiterrorism — opposed to or acting against terrorism; counterterrorist
- antiterrorist — relating to measures, policies, or organizations designed to combat terrorist activity
- aphanipterous — of or relating to the wingless insects of the order Aphaniptera