13-letter words containing en
- antiobscenity — opposed to or working to combat obscenity
- antioestrogen — a drug that inhibits the activity of oestrogens
- antioncogenes — Plural form of antioncogene.
- 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
- apparent time — Astronomy. local time measured by the hour angle of the sun.
- apparent wind — (wind), the velocity of air as measured from a moving object, as a ship.
- apparentement — a coalition formed between political parties during an election.
- appendiculate — having appendicles
- apportionment — the act of apportioning
- apprehendable — That can be apprehended.
- apprehensible — capable of being comprehended or grasped mentally
- apprehensibly — In an apprehensive manner; cautiously.
- apprehensions — Plural form of apprehension.
- apprenticeage — (obsolete) Apprenticeship.
- appurtenances — accessories or equipment
- arabian senna — a tropical leguminous plant, Cassia angustifolia, having yellow flowers and long pods
- arc cotangent — the angle, measured in radians, that has a cotangent equal to a given number. Symbol: cot −1. Abbreviation: arc cot.
- arcus senilis — an opaque circle around the cornea of the eye, often seen in elderly people
- arena theater — a theater having a central stage without a proscenium, surrounded by seats
- argentiferous — containing or bearing silver
- argentine ant — a small brown ant, Iridomyrmex humilis, introduced into the southern U.S. from South America: a household and fruit pest.
- argumentation — Argumentation is the process of arguing in an organized or logical way, for example in philosophy.
- argumentative — Someone who is argumentative is always ready to disagree or start quarrelling with other people.
- aristolochene — (organic compound) A bicyclic sesquiterpene produced by certain fungi.
- armamentarium — the items that comprise the material and equipment used by a physician in his professional practice
- 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
- as it happens — You use as it happens in order to introduce a statement, especially one that is rather surprising.
- ascension day — the 40th day after Easter, when the Ascension of Christ into heaven is celebrated
- ascensiontide — the ten days from Ascension Day to the day before Whit Sunday
- ascertainment — to find out definitely; learn with certainty or assurance; determine: to ascertain the facts.
- aschaffenburg — a city in Germany, on the River Main in Bavaria: seat of the Imperial Diet (1447); ceded to Bavaria in 1814. Pop: 68 607 (2003 est)
- ascoli piceno — a town in E central Italy, in the Marches: capital of the Roman province of Picenum; site of the massacre of all its Roman citizens in the Social War in 90 bc. Pop: 51 375 (2001)
- ashlar veneer — a thin dressed stone with straight edges, used to face a wall
- assemblywomen — Plural form of assemblywoman.
- assentiveness — the tendency to concur or comply
- assertiveness — confidently aggressive or self-assured; positive: aggressive; dogmatic: He is too assertive as a salesman.
- 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
- astonishments — Plural form of astonishment.
- at attachment — Advanced Technology Attachment
- at loose ends — in an unsettled, disorganized, or confused condition
- 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.
- atomic energy — nuclear energy
- attentiveness — characterized by or giving attention; observant: an attentive audience.
- audience room — a room for holding formal interviews or hearings.
- augmentations — Plural form of augmentation.
- austenitizing — to form austenite in (a ferrous alloy) by heating.