12-letter words containing o, y
- apocalyptist — the writer of the Apocalypse or a related work
- apocryphally — In an apocryphal manner.
- apocynaceous — of, relating to, or belonging to the Apocynaceae, a family of mostly tropical flowering plants with latex in their stems, including the dogbane, periwinkle, oleander, and some lianas
- apolitically — in an apolitical manner
- apostolicity — the quality of being apostolic
- appendectomy — the surgical removal of the vermiform appendix
- appreciatory — appreciative.
- araeosystyle — (of columned buildings) having an alternately very wide and very narrow intercolumniation
- archaeometry — the use of science and modern technology in archaeology to examine and interpret archaeological remains
- archdeaconry — the office, rank, or duties of an archdeacon
- archeopteryx — A specimen of the species Archaeopteryx lithographica, being the earliest and most primitive known bird, representing a transition in the evolution of dinosaurs to birds.
- army cutworm — the larva of a noctuid moth, Chorizagrotis auxiliaris, that is a pest of wheat and alfalfa in the Plains states.
- army officer — a person in the army who holds a position of authority, responsibility and duty, especially one who holds a commission
- aromatherapy — Aromatherapy is a type of treatment which involves massaging the body with special fragrant oils.
- aromatically — having an aroma; fragrant or sweet-scented; odoriferous.
- arousability — to stimulate sexually.
- array theory — (theory) A theory developed by Trenchard More Jr. and used as the basis for the NIAL language. Papers are available from the IBM Cambridge Scientific Center, Cambridge MA.
- arsenopyrite — a white or grey metallic mineral consisting of a sulphide of iron and arsenic that forms monoclinic crystals with an orthorhombic shape: an ore of arsenic. Formula: FeAsS
- arteriopathy — Any disease of the arteries.
- arthrography — the X-ray examination of a joint after injection of a contrast medium into the joint space
- arthroplasty — surgical repair of a diseased joint
- articulatory — an act or the process of articulating: the articulation of a form; the articulation of a new thought.
- artiodactyle — (zoology) One of the Artiodactyla, a group of ungulates.
- artiodactyls — Plural form of artiodactyl.
- aschoff body — any of the spindleshaped nodules found in heart tissue and associated with the myocarditis of rheumatic fever.
- ascomycetous — belonging or pertaining to the Ascomycota.
- asphyxiation — Asphyxiation is a lack of oxygen in blood, which causes suffocation.
- assay groove — (in silverwork) a furrow left in a piece by the digging out of metal for assay.
- assay office — an organization that assays and monitors the purity of precious metals in a particular country
- assimilatory — characterized by assimilation; assimilating.
- astanga yoga — a revived ancient form of yoga that involves a fast and powerful series of movements
- astoundingly — capable of overwhelming with amazement; stunningly surprising.
- astrobiology — the branch of biology that investigates the possibility of life elsewhere in the universe
- astrocytomas — Plural form of astrocytoma.
- astrodynamic — Pertaining to astrodynamics.
- astrogeology — the study of the structure, composition, and history of other planets and other bodies in the solar system
- astrophysics — Astrophysics is the study of the physical and chemical structure of the stars, planets, and other natural objects in space.
- asymptomatic — If someone with a disease is asymptomatic, it means that they do not show any symptoms of the disease.
- asymptotical — of or relating to an asymptote.
- asynchronies — a lack of synchronism or coincidence in time.
- asynchronism — a lack of synchronism; occurrence at different times
- asynchronous — An asynchronous electric machine is one in which the magnetic field and the rotation are not exactly the same.
- athrocytosis — the capability of a cell to receive and store matter
- attorneyship — The office or profession of an attorney.
- atychiphobia — (rare) The fear of failure.
- audio system — integrated equipment for producing amplified sound, as in a hi-fi or a mobile disco, or as a public-address system on stage
- auditorially — Anatomy, Physiology. pertaining to hearing, to the sense of hearing, or to the organs of hearing.
- auspiciously — promising success; propitious; opportune; favorable: an auspicious occasion.
- autapomorphy — (cladistics) A derived trait that is unique to a particular taxon.
- autoallogamy — the ability of some plants of a species to cross-pollinate and others to self-pollinate