13-letter words containing i, n, o
- archidiaconal — of or relating to an archdeacon or his office
- architectonic — denoting, relating to, or having architectural qualities
- argentiferous — containing or bearing silver
- argumentation — Argumentation is the process of arguing in an organized or logical way, for example in philosophy.
- aridification — the process by which a humid region becomes increasingly dry, as by climatic change or human interference with the ecology.
- aristolochene — (organic compound) A bicyclic sesquiterpene produced by certain fungi.
- armor-plating — The armor-plating on a vehicle or building is the hard metal covering that is intended to protect it from gunfire and other missiles.
- aromatization — the conversion of aliphatic or alicyclic compounds to aromatic hydrocarbons.
- 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
- arthroconidia — Plural form of arthroconidium.
- articulations — Plural form of articulation.
- arundinaceous — resembling a reed
- as we know it — If you talk about a thing or system as we know it, you are referring to the form in which it exists now and which is familiar to most people.
- 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
- 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)
- aspirationals — Plural form of aspirational.
- assassination — to kill suddenly or secretively, especially a politically prominent person; murder premeditatedly and treacherously.
- assassinators — Plural form of assassinator.
- assiduousness — constant; unremitting: assiduous reading.
- assimilations — Plural form of assimilation.
- associational — relating to association or alliance or an association, alliance or affiliation
- assumptionist — Augustinian of the Assumption.
- astereognosis — inability to recognize objects by touch
- astonishingly — causing astonishment or surprise; amazing: an astonishing victory; an astonishing remark.
- astonishments — Plural form of astonishment.
- astrodynamics — the study of the motion of natural and artificial bodies in space
- astronautical — of or relating to astronautics or astronauts.
- at a discount — below the regular price
- at knifepoint — If you are attacked or robbed at knifepoint, someone threatens you with a knife while they attack or steal from you.
- at this point — at this moment in time
- 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
- atomic number — the number of protons in the nucleus of an atom of an element
- atomic weapon — a weapon in which energy is provided by nuclear fission
- atrociousness — The state of being atrocious.
- attributional — of or relating to the act of attributing
- auction block — Also called block. a platform from which an auctioneer sells: the old courthouse where slaves were sold from the auction block.
- auction house — a commercial company that specializes in selling items at auction
- auction pitch — a variety of all fours in which players bid to determine the trump or pitch.
- auctioneering — Present participle of auctioneer.
- audaciousness — Risky or daring behaviour.
- audience room — a room for holding formal interviews or hearings.
- audio-lingual — pertaining to listening comprehension and speaking, especially in learning a foreign language.
- augmentations — Plural form of augmentation.
- aulic council — a council, founded in 1498, of the Holy Roman Emperor. It functioned mainly as a judicial body
- aum shinrikyo — a syncretistic Japanese cult combining elements of Buddhism, Hinduism, and Christianity, founded by Shoko Asahara in 1986; responsible for a number of murders and in particular a nerve-gas attack on the Tokyo underground in 1995