13-letter words containing r, e, s, n, a, i
- 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-universe — a universe made up of antimatter, postulated to exist far out in space
- anticorrosive — preventing corrosion
- antidiuretics — Plural form of antidiuretic.
- antielectrons — Plural form of antielectron.
- 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
- 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.
- 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.
- 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
- 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
- apperceptions — Plural form of apperception.
- appersonation — the unconscious assumption of the personality characteristics of another, usually well known, person.
- appreciations — Plural form of appreciation.
- apprehensible — capable of being comprehended or grasped mentally
- apprehensibly — In an apprehensive manner; cautiously.
- apprehensions — Plural form of apprehension.
- arabian horse — one of a breed of horses, raised originally in Arabia and adjacent countries, noted for intelligence, grace, and speed.
- arabian senna — a tropical leguminous plant, Cassia angustifolia, having yellow flowers and long pods
- arbitrariness — subject to individual will or judgment without restriction; contingent solely upon one's discretion: an arbitrary decision.
- arcus senilis — an opaque circle around the cornea of the eye, often seen in elderly people
- argentiferous — containing or bearing silver
- arias sanchez — Oscar. born 1940, Costa Rican statesman; president (1986–90, 2006–2010); Nobel peace prize 1987
- aristolochene — (organic compound) A bicyclic sesquiterpene produced by certain fungi.
- arm wrestling — a contest in which two people sit facing each other each with one elbow resting on a table, clasp hands, and each tries to force the other's arm flat onto the table while keeping his own elbow touching the table
- armstand dive — a dive starting from a handstand at the end of a springboard or a platform with the diver's back to the water.
- arseniuretted — combined with arsenic so as to form an arsenide.
- 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
- artesian well — well sunk through impermeable strata receiving water from an area at a higher altitude than that of the well
- arundinaceous — resembling a reed
- ascertainable — to find out definitely; learn with certainty or assurance; determine: to ascertain the facts.
- ascertainably — In a way that can be ascertained.
- ascertainment — to find out definitely; learn with certainty or assurance; determine: to ascertain the facts.
- assertiveness — confidently aggressive or self-assured; positive: aggressive; dogmatic: He is too assertive as a salesman.