13-letter words starting with or
- ora et labora — pray and work
- ora pro nobis — a Latin invocation meaning pray for us
- oraculousness — the state of being oraculous
- oral examiner — someone who administers oral exams
- oral solution — An oral solution is a medicine in liquid form for drinking.
- orange roughy — a marine food fish, Hoplosthenus atlanticus, of S Pacific waters
- orange squash — an orange-flavoured drink made from fruit juice, sugar, and water
- orate fratres — the call to prayer, addressed by the celebrant of the Mass to the people just before the Secret.
- orbital index — the ratio of the maximum breadth to the maximum height of the orbital cavity multiplied by 100.
- orbitofrontal — Located in the frontal lobes above the orbits of the eyes.
- orchard grass — a weedy grass, Dactylis glomerata, often grown for pastures.
- orchard valve — an alfalfa valve of lesser diameter than the pipe it closes.
- orchesography — a written study of dancing
- orchestra pit — musicians' seating in front of stage
- orchestra-pit — a group of performers on various musical instruments, including especially stringed instruments of the viol class, clarinets and flutes, cornets and trombones, drums, and cymbals, for playing music, as symphonies, operas, popular music, or other compositions.
- orchestralist — a person who writes or arranges orchestral music
- orchestrating — Present participle of orchestrate.
- orchestration — (uncountable) the arrangement of music for performance by an orchestra.
- orchestrators — Plural form of orchestrator.
- orchid family — the plant family Orchidaceae, characterized by terrestrial or epiphytic herbaceous plants having simple, parallel-veined, usually alternate leaves, complex and often large and showy flowers pollinated primarily by insects, and fruit in the form of a capsule containing numerous minute seeds, and including calypso, fringed orchis, lady's-slipper, pogonia, rattlesnake plantain, vanilla, as well as numerous tropical orchids such as those of the genera Cattleya, Cymbidium, Dendrobium, Phalaenopsis, and Vanda.
- orchidologist — someone who is knowledgeable in orchidology
- orchidomaniac — a person who is obsessed with or has a passion for orchids
- orchiectomies — Plural form of orchiectomy.
- order a drink — When a customer orders a drink, they ask for it to be brought to them.
- ordered field — Mathematics. a field containing a subset of elements closed under addition and multiplication and having the property that every element in the field is either zero, in the subset, or has its additive inverse in the subset.
- ordinal scale — a scale on which data is shown simply in order of magnitude since there is no standard of measurement of differences: for instance, a squash ladder is an ordinal scale since one can say only that one person is better than another, but not by how much
- ordinary gain — An ordinary gain is a gain in the course of normal business.
- ordinary loss — An ordinary loss is a loss in the course of normal business.
- ordinary wave — Radio. (of the two waves into which a radio wave is divided in the ionosphere under the influence of the earth's magnetic field) the wave with characteristics more nearly resembling those that the undivided wave would have exhibited in the absence of the magnetic field.
- ordzhonikidze — Also, Orjonikidze. former name of Vladikavkaz.
- oregon myrtle — California laurel
- organ grinder — an itinerant street musician who earns a living by playing a hand organ or hurdy-gurdy.
- organ whistle — a steam or air whistle in which the jet is forced up against the thin edge of a pipe closed at the top.
- organ-builder — a maker of organs
- organ-grinder — an itinerant street musician who earns a living by playing a hand organ or hurdy-gurdy.
- organisations — Plural form of organisation.
- organizations — The action of organizing something.
- organoarsenic — (organic chemistry) Describing any organic compound containing a carbon to arsenic bond.
- organogenesis — Biology. the origin and development of an organ.
- organogenetic — Relating to organogenesis.
- organolithium — (organic chemistry) Describing any organic compound containing a carbon to lithium bond.
- organosilicon — pertaining to or noting an organic compound containing silicon, especially where attached directly to a carbon atom.
- organotherapy — the branch of therapeutics that deals with the use of remedies prepared from the organs of animals, as from the thyroid gland, the pancreas, or the suprarenal bodies.
- organotropism — Physiology. the attraction of microorganisms or chemical substances to particular organs or tissues of the body.
- orgiastically — In an orgiastic fashion.
- orgone energy — (in Wilhelm Reich's theory) a vital, primal, nonmaterial element believed to permeate the universe.
- orientalizing — Present participle of orientalize.
- orientational — Of or pertaining to orientation.
- orifice meter — a plate having a central hole that is placed across the flow of a liquid, usually between flanges in a pipeline. The pressure difference generated by the flow velocity through the hole enables the flow quantity to be measured
- originalities — Plural form of originality.
On this page, we collect all 13-letter words starting with OR. It’s easy to find right word with a certain length. It is the easiest way to find 13-letter word that beginning with OR to use in Scrabble or Crossword puzzles.