9-letter words containing a, p, o
- apophenic — Of or relating to apophenia.
- apophyges — Plural form of apophyge.
- apophyses — Plural form of apophyse.
- 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
- apoptotic — of or relating to apoptosis
- apostates — Plural form of apostate.
- apostille — a marginal annotation or note.
- apostolic — Apostolic means belonging or relating to a Christian religious leader, especially the Pope.
- apostolos — a book containing parts of the Epistles and parts of the Acts of the Apostles.
- apothecia — the fruit of certain lichens and fungi: usually an open, saucer-shaped or cup-shaped body, the inner surface of which is covered with a layer that bears asci.
- apothegms — Plural form of apothegm.
- apothesis — (architecture) A place on the south side of the chancel in primitive churches, furnished with shelves, for books, vestments, etc.
- appaloosa — a breed of horse, originally from America, typically having a spotted rump
- apparitor — an officer who summons witnesses and executes the orders of an ecclesiastical and (formerly) a civil court
- apple box — an ornamental Australian tree, Eucalyptus bridgesiana, having heart-shaped juvenile leaves, large lanceolate adult leaves, and conical fruits
- applewood — The timber of the apple tree, used in carpentry and to smoke food.
- appointed — If something happens at the appointed time, it happens at the time that was decided in advance.
- appointee — An appointee is someone who has been chosen for a particular job or position of responsibility.
- appointer — to name or assign to a position, an office, or the like; designate: to appoint a new treasurer; to appoint a judge to the bench.
- appointor — a person to whom a power to nominate persons to take property is given by deed or will
- apportion — When you apportion something such as blame, you decide how much of it different people deserve or should be given.
- apposable — capable of being apposed or brought into apposition
- approbate — to accept as valid
- approvals — Plural form of approval.
- approvers — a person who approves.
- approving — An approving reaction or remark shows support for something, or satisfaction with it.
- apriorism — the philosophical doctrine that there may be genuine knowledge independent of experience
- apriorist — a person who believes in apriorism
- apriority — the quality or fact of being a priori
- apronfuls — Plural form of apronful.
- apronlike — resembling an apron
- aprosexia — Inability to concentrate.
- aprotinin — (protein) A polypeptide, obtained from bovine lung tissue, that acts as a protease inhibitor, and is used in surgery to reduce bleeding.
- apsidiole — a secondary, or small, apse
- aquaphobe — a person who is abnormally afraid of water
- aquaporin — any one of a group of proteins in cell membranes that allow the passage of water across the membrane
- arcograph — an instrument used for drawing arcs without using a central point
- areopagus — the hill to the northwest of the Acropolis in Athens
- arpeggios — Plural form of arpeggio.
- arthropod — any invertebrate of the phylum Arthropoda, having jointed limbs, a segmented body, and an exoskeleton made of chitin. The group includes the crustaceans, insects, arachnids, and centipedes
- ascocarps — Plural form of ascocarp.
- ascospore — one of the spores (usually eight in number) that are produced in an ascus
- asepalous — (of a plant or flower) having no sepals
- aspersion — a disparaging or malicious remark; slanderous accusation (esp in the phrase cast aspersions (on))
- asphodels — Plural form of asphodel.
- aspidioid — relating to an aspidium
- aspirator — a device employing suction, such as a jet pump or one for removing fluids from a body cavity
- asymptote — a straight line that is closely approached by a plane curve so that the perpendicular distance between them decreases to zero as the distance from the origin increases to infinity
- ata point — (unit, text) (Or "Anglo-Saxon point") One of the two most common variants of the point, equal to 0.3514598 mm, or 0.0138366 inch, or 1/72.272 inch. The ATA point is used on the island of the United Kingdom and on the American continent.