13-letter words containing a, r, o, n, s
- 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
- angular house — any of the four astrological houses that begin at the angles: the first, fourth, seventh, and tenth houses, that correspond, respectively, to self, home, others, and career.
- animadversion — criticism or censure
- anise camphor — anethole.
- anisometropia — an imbalance in the power of the two eyes to refract light
- anisometropic — relating to anisometropia
- another-guess — of another kind.
- antenniferous — having antennae
- anthroposcopy — physiognomy (def 2).
- anthroposophy — the spiritual and mystical teachings of Rudolph Steiner, based on the belief that creative activities such as myth making, which formed a part of life in earlier times, are psychologically valuable, esp for educational and therapeutic purposes
- anticorrosion — the prevention or counteracting of corrosion
- anticorrosive — preventing corrosion
- antielectrons — Plural form of antielectron.
- antiformalist — opposed to formalism
- 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
- antipersonnel — (of weapons, etc) designed to cause casualties to personnel rather than to destroy equipment or defences
- antiphonaries — Plural form of antiphonary.
- 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.
- antiscorbutic — preventing or curing scurvy
- antisudorific — an antiperspirant.
- 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
- apperceptions — Plural form of apperception.
- appersonation — the unconscious assumption of the personality characteristics of another, usually well known, person.
- appreciations — Plural form of appreciation.
- apprehensions — Plural form of apprehension.
- apron strings — If you say that someone is tied to another person's apron strings, you mean that they are controlled or influenced too much by the other person.
- arabian horse — one of a breed of horses, raised originally in Arabia and adjacent countries, noted for intelligence, grace, and speed.
- arachnivorous — Spider-eating.
- arachnoiditis — an inflammation of the arachnoid membrane
- argentiferous — containing or bearing silver
- aristolochene — (organic compound) A bicyclic sesquiterpene produced by certain fungi.
- arsenous acid — a toxic white powder, As2O3, used to make other arsenic compounds, insecticides, and preservatives; white arsenic
- arteriovenous — of, relating to, or affecting an artery and a vein
- articulations — Plural form of articulation.
- arundinaceous — resembling a reed
- aspirationals — Plural form of aspirational.
- assassinators — Plural form of assassinator.
- astereognosis — inability to recognize objects by touch
- asthenosphere — a thin semifluid layer of the earth (100–200 km thick), below the outer rigid lithosphere, forming part of the mantle and thought to be able to flow vertically and horizontally, enabling sections of lithosphere to subside, rise, and undergo lateral movement
- astrodynamics — the study of the motion of natural and artificial bodies in space
- astronautical — of or relating to astronautics or astronauts.
- aten asteroid — one of a small group of asteroids whose orbits cross that of the earth and whose semimajor axes are smaller than that of the earth.