8-letter words containing a, t, r, o
- onolatry — Worship of the ass or donkey.
- onstream — Being produced.
- ontarian — a province in S Canada, bordering on the Great Lakes. 412,582 sq. mi. (1,068,585 sq. km). Capital: Toronto.
- operants — Plural form of operant.
- operated — to work, perform, or function, as a machine does: This engine does not operate properly.
- operates — Third-person singular simple present indicative form of operate.
- operatic — of or relating to opera: operatic music.
- operator — a person who operates a machine, apparatus, or the like: a telegraph operator.
- operetta — a short opera, usually of a light and amusing character.
- optogram — (physiology) An image of external objects fixed on the retina by the photochemical action of light on the visual purple.
- orations — Plural form of oration.
- oratorio — an extended musical composition with a text more or less dramatic in character and usually based upon a religious theme, for solo voices, chorus, and orchestra, and performed without action, costume, or scenery.
- oratress — a female orator or petitioner
- orbitale — Craniometry, Cephalometry. the lowermost point on the lower margin of the left orbit, located instrumentally on the skull or by palpation on the head.
- orbitals — Plural form of orbital.
- orbitary — the curved path, usually elliptical, described by a planet, satellite, spaceship, etc., around a celestial body, as the sun.
- orchanet — Alternative form of alkanet.
- ordinant — a line parallel to the y-axis or a distance of one point from the x-axis
- ordinate — Mathematics. (in plane Cartesian coordinates) the y-coordinate of a point: its distance from the x-axis measured parallel to the y-axis.
- oresteia — a trilogy of tragic dramas (458 b.c.) by Aeschylus, consisting of the Agamemnon, the Choëphori, and the Eumenides.
- organist — a person who plays the organ.
- orgastic — the physical and emotional sensation experienced at the peak of sexual excitation, usually resulting from stimulation of the sexual organ and usually accompanied in the male by ejaculation.
- oribatid — a mite of the family Oribatoidea
- oriental — (usually initial capital letter) of, relating to, or characteristic of the Orient, or East; Eastern.
- orlistat — A drug designed to treat obesity.
- ornament — an accessory, article, or detail used to beautify the appearance of something to which it is added or of which it is a part: architectural ornaments.
- ornately — elaborately or sumptuously adorned, often excessively or showily so: They bought an ornate Louis XIV sofa.
- ortolans — Plural form of ortolan.
- ossature — the structure or framework supporting a building or sculpture.
- ostmarks — Plural form of ostmark.
- ostracod — seed shrimp.
- ostracon — (in ancient Greece) a potsherd, especially one used as a ballot on which the name of a person voted to be ostracized was inscribed.
- ostrakon — ostracon.
- otorrhea — a mucopurulent discharge from the ear.
- out tray — An out tray is a shallow container used in offices to put letters and documents in when they have been dealt with and are ready to be sent somewhere else. Compare in tray.
- out-year — the fiscal year after a year covered by a budget; any year beyond the budget year for which projections of spending are made.
- outargue — to outdo or defeat in arguing: That man could outargue the devil himself.
- outboard — located on the exterior of a hull or aircraft.
- outbrave — to stand up to; face defiantly: to outbrave charges of misconduct.
- outbrawl — to defeat in a brawl
- outbreak — a sudden breaking out or occurrence; eruption: the outbreak of war.
- outcaper — to exceed in capering
- outcharm — to exceed in charming
- outcrawl — to crawl further than or faster than
- outdream — to exceed in dreaming
- outflare — to burn with an unsteady, swaying flame, as a torch or candle in the wind.
- outglare — (transitive) To surpass or outdo in glaring.
- outguard — a guard placed furthest away from the main contingent of an army
- outlawry — the act or process of outlawing.
- outlearn — to exceed in learning