13-letter words containing t, h, i, r
- antiauthority — Opposed to authority.
- antichristian — Pertaining to Antichrist.
- antidiarrheal — An antidiarrheal is a substance used to prevent or treat diarrhea.
- antilogarithm — a number whose logarithm to a given base is a given number
- antinephritic — acting against kidney disease
- antiphonaries — Plural form of antiphonary.
- antirheumatic — acting against rheumatism
- anythingarian — a person who adheres to no particular creed
- aphanipterous — of or relating to the wingless insects of the order Aphaniptera
- apheliotropic — growing in a direction away from the sunlight
- apocryphalist — A member of the group who supported the inclusion of the Apocrypha in the Bible.
- apostrophized — Simple past tense and past participle of apostrophize.
- apostrophizes — Third-person singular simple present indicative form of apostrophize.
- arachnoiditis — an inflammation of the arachnoid membrane
- archaeologist — a specialist in archaeology, the scientific study of prehistoric peoples and their cultures by analysis of their artifacts, inscriptions, monuments, etc.
- archaeometric — relating to archaeometry
- archebacteria — Plural form of archebacterium.
- archeologists — archaeology.
- archimandrite — the head of a monastery or a group of monasteries
- architectonic — denoting, relating to, or having architectural qualities
- architectural — Architectural means relating to the design and construction of buildings.
- architectured — Designed (according to a form of architecture, or as if by an architect).
- architectures — Plural form of architecture.
- aristolochene — (organic compound) A bicyclic sesquiterpene produced by certain fungi.
- arithmetician — a person skilled in arithmetic
- arithmophobia — the fear of numbers
- arteriography — the X-ray examination of an artery or arterial system after injection of a contrast medium into the bloodstream
- arthritically — in an arthritic manner
- arthroconidia — Plural form of arthroconidium.
- arthroscopies — Plural form of arthroscopy.
- astrophysical — Of or pertaining to astrophysics.
- at first hand — If you learn or experience something at first hand, you experience it yourself or learn it directly rather than being told about it by other people.
- 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.
- atomic theory — any theory in which matter is regarded as consisting of atoms, esp that proposed by John Dalton postulating that elements are composed of atoms that can combine in definite proportions to form compounds
- autapomorphic — (biology) Describing any characteristic that has evolved in only a single species (or other taxon).
- authenticator — a person or thing that authenticates.
- authorisation — Alternative spelling of authorization.
- authoritarian — If you describe a person or an organization as authoritarian, you are critical of them controlling everything rather than letting people decide things for themselves.
- authoritative — Someone or something that is authoritative gives an impression of power and importance and is likely to be obeyed.
- authorization — an authorizing or being authorized
- autobiography — Your autobiography is an account of your life, which you write yourself.
- autocatharsis — a therapeutic process designed to free unconscious disturbances by having the patient write about his or her experiences, impressions, etc.
- autographical — Relating to, or used in, the process of autography.
- autorickshaws — Plural form of autorickshaw.
- azurmalachite — a blue-green ornamental stone consisting of a mixture of azurite and malachite.
- back straight — a straight part of a circuit, esp of an athletics track or a racecourse, furthest from the finishing point
- bacteriophage — a virus that is parasitic in a bacterium and multiplies within its host, which is destroyed when the new viruses are released
- bacteriophagy — the action of a bacteriophage