13-letter words containing r, e, s, i, t, a
- 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
- apogeotropism — negative geotropism, as shown by plant stems
- apostrophized — Simple past tense and past participle of apostrophize.
- apostrophizes — Third-person singular simple present indicative form of apostrophize.
- apperceptions — Plural form of apperception.
- appersonation — the unconscious assumption of the personality characteristics of another, usually well known, person.
- appreciations — Plural form of appreciation.
- arbitrariness — subject to individual will or judgment without restriction; contingent solely upon one's discretion: an arbitrary decision.
- archaeologist — a specialist in archaeology, the scientific study of prehistoric peoples and their cultures by analysis of their artifacts, inscriptions, monuments, etc.
- archeologists — archaeology.
- architectures — Plural form of architecture.
- argentiferous — containing or bearing silver
- aristocracies — Plural form of aristocracy.
- 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
- armistice day — the anniversary of the signing of the armistice that ended World War I, on Nov 11, 1918, now kept on Remembrance Sunday
- 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.
- artaxerxes ii — died ?358 bc, king of Persia (?404–?358). He defeated his brother Cyrus the Younger at Cunaxa (401)
- 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
- arthroscopies — Plural form of arthroscopy.
- 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.
- assault rifle — a firearm that is capable of firing multiple rounds in a very short period
- assertability — The quality of being assertable.
- assertiveness — confidently aggressive or self-assured; positive: aggressive; dogmatic: He is too assertive as a salesman.
- assortatively — In an assortative way.
- astereognosis — inability to recognize objects by touch
- asteroid belt — the concentrations of asteroids that move around the sun mainly between the orbits of Mars and Jupiter
- astroparticle — (astrophysics) A subatomic particle of cosmic origin.
- 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.
- athenagoras i — (Aristocles Spyrou) 1886–1972, Archbishop Ecumenical of Constantinople and Ecumenical Patriarch of the Greek Orthodox Church 1948–72.
- atherogenesis — (medicine) The formation of atheromas, especially on the walls of the arteries.
- atmospherical — pertaining to, existing in, or consisting of the atmosphere: atmospheric vapors.