9-letter words containing o, s, i
- apophysis — a process, outgrowth, or swelling from part of an animal or plant
- apoptosis — the programmed death of some of an organism's cells as part of its natural growth and development
- apostille — a marginal annotation or note.
- apostolic — Apostolic means belonging or relating to a Christian religious leader, especially the Pope.
- apothesis — (architecture) A place on the south side of the chancel in primitive churches, furnished with shelves, for books, vestments, etc.
- apriorism — the philosophical doctrine that there may be genuine knowledge independent of experience
- apriorist — a person who believes in apriorism
- aprosexia — Inability to concentrate.
- apsidiole — a secondary, or small, apse
- arabinose — a pentose sugar in plant gums, esp of cedars and pines. It is used as a culture medium in bacteriology. Formula: C5H10O5
- arborists — Plural form of arborist.
- arbovirus — any one of a group of viruses that cause such diseases as encephalitis and dengue and are transmitted to humans by arthropods, esp insects and ticks
- arccosine — the function the value of which for a given argument between –1 and 1 is the angle in radians (between 0 and π), the cosine of which is that argument: the inverse of the cosine function
- aristotle — a bottle
- armouries — a drill hall used for training and as headquarters by a reserve unit of the armed forces
- aromatics — Plural form of aromatic.
- aromatise — Alternative spelling of aromatize.
- arpeggios — Plural form of arpeggio.
- arsenious — of or containing arsenic in the trivalent state
- arsonists — Plural form of arsonist.
- arthrosis — a bone joint which enables movement
- asbestoid — Mineralogy. a fibrous mineral, either amphibole or chrysotile, formerly used for making incombustible or fireproof articles.
- asbomania — the perceived indiscriminate and excessive use by the authorities of anti-social behaviour orders in dealing with people causing a nuisance to their fellow citizens
- ascension — In some religions, when someone goes to heaven, you can refer to their ascension to heaven.
- ascogonia — Plural form of ascogonium.
- asimovian — referring to or reminiscent of the work of Isaac Asimov
- aspersion — a disparaging or malicious remark; slanderous accusation (esp in the phrase cast aspersions (on))
- aspidioid — relating to an aspidium
- aspirator — a device employing suction, such as a jet pump or one for removing fluids from a body cavity
- assertion — a positive statement, usually made without an attempt at furnishing evidence
- assidious — Misspelling of assiduous.
- assiduous — Someone who is assiduous works hard or does things very thoroughly.
- associate — If you associate someone or something with another thing, the two are connected in your mind.
- assoiling — Present participle of assoil.
- assorting — Present participle of assort.
- assortive — to distribute, place, or arrange according to kind or class; classify; sort.
- asteroids — Plural form of asteroid.
- astichous — having a structure or layout that is not in rows
- astonying — Present participle of astony.
- astroglia — The group of star-shaped glial cells in the brain and spinal cord.
- astucious — Subtle; cunning; astute.
- asystolic — Pertaining to asystole.
- ateliosis — a form of infantilism caused by pituitary malfunction, characterized by a childish face and voice and associated physical underdevelopment, but not affecting intelligence.
- atherosis — (pathology) atheroma.
- athetosic — relating to or characterized by athetosis
- athetosis — a condition characterized by uncontrolled rhythmic writhing movement, esp of fingers, hands, head, and tongue, caused by cerebral lesion
- atmolysis — a method of separating gases that depends on their differential rates of diffusion through a porous substance
- atomistic — of atoms or atomism
- atomizers — Plural form of atomizer.
- atonalism — atonality.