13-letter words containing r, y, o
- onychorrhexis — (pathology) fingernail and toenail brittleness and breakage, such as may be due to excessive strong soap and water exposure, nail polish remover, hypothyroidism, anemia, anorexia nervosa or bulimia, or after oral retinoid therapy.
- open registry — ship registration under a national flag available to all ships regardless of nationality.
- openheartedly — Alt form open-heartedly.
- opera company — a company that puts on productions of operas
- operationally — able to function or be used; functional: How soon will the new factory be operational?
- opisthography — the practice of writing on the front and back of a parchment or papyrus
- oppositionary — the action of opposing, resisting, or combating.
- opprobriously — In an opprobrious manner.
- orange roughy — a marine food fish, Hoplosthenus atlanticus, of S Pacific waters
- orchesography — a written study of dancing
- 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.
- 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.
- oregon myrtle — California laurel
- 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.
- orgiastically — In an orgiastic fashion.
- orgone energy — (in Wilhelm Reich's theory) a vital, primal, nonmaterial element believed to permeate the universe.
- originatively — in an originative manner
- ornamentality — used or grown for ornament: ornamental plants.
- oropharyngeal — the part of the pharynx between the soft palate and the upper edge of the epiglottis.
- orthoepically — In terms of correct pronunciation.
- orthogonality — (mathematics, statistics) the property of being orthogonal.
- orthohydrogen — the form of molecular hydrogen in which the nuclei of the two hydrogen atoms contained in the molecule have spins in the same direction.
- orthopyroxene — a member of the pyroxene group of minerals having an orthorhombic crystal structure, such as enstatite and hypersthene
- oscillography — a device for recording the wave-forms of changing currents, voltages, or any other quantity that can be translated into electric energy, as sound waves.
- over-analytic — pertaining to or proceeding by analysis (opposed to synthetic).
- over-identify — to recognize or establish as being a particular person or thing; verify the identity of: to identify handwriting; to identify the bearer of a check.
- overanalyzing — Present participle of overanalyze.
- overbearingly — domineering; dictatorial; haughtily or rudely arrogant.
- overcredulity — Excessive credulity.
- overdiversity — excessive diversity
- overflowingly — to an excessive degree
- overfrequency — Also, frequence. the state or fact of being frequent; frequent occurrence: We are alarmed by the frequency of fires in the neighborhood.
- overingenuity — the state of being ingenious to a fault
- overintensity — the state of being too intense
- overlay glass — case glass.
- overseriously — in an excessively serious manner
- overstability — the state of being excessively stable
- overzealously — too zealous: overzealous for reform.
- ovoviviparity — producing eggs that are hatched within the body, so that the young are born alive but without placental attachment, as certain reptiles or fishes.
- owl butterfly — any of several South American nymphalid butterflies of the genus Caligo, especially C. eurylochus, having a spot like an owl's eye on each hind wing.
- oxford theory — the theory attributing the authorship of Shakespeare's plays to Edward de Vere, Earl of Oxford, 1550–1604.
- oystercatcher — any of several long-billed wading birds of the genus Haematopus that have chiefly black-and-white plumage and that feed on oysters, clams, mussels, etc.
- palaeocrystic — consisting of former glacial formation
- pancreatotomy — incision of the pancreas.
- parabolically — of, relating to, or involving a parable.
- paradoxically — having the nature of a paradox; self-contradictory.
- paramyxovirus — any of various RNA-containing viruses that are similar to but larger than the myxoviruses, including the viruses that cause mumps, measles, parainfluenza, and Newcastle disease.
- paranormality — the state of being paranormal