10-letter words containing o, r, n, a, t
- pratincole — any of several limicoline birds of the genus Glareola, of the Eastern Hemisphere, having a short bill, long, narrow, pointed wings, and a forked tail.
- preappoint — to appoint beforehand.
- precaution — a measure taken in advance to avert possible evil or to secure good results.
- precontact — prior contact
- prefrontal — anterior to, situated in, or pertaining to the anterior part of a frontal structure.
- prestation — a payment in money or in services.
- pro-acting — serving temporarily, especially as a substitute during another's absence; not permanent; temporary: the acting mayor.
- proclinate — (of a part) directed or inclined forward.
- prognathic — having protrusive jaws; having a gnathic index over 103.
- prolongate — to prolong.
- promethean — of or suggestive of Prometheus.
- propellant — a propelling agent.
- propionate — an ester or salt of propionic acid.
- protanopia — a defect of vision in which the retina fails to respond to red or green.
- proteanism — readily assuming different forms or characters; extremely variable.
- protectant — a substance, as a chemical spray, that provides protection, as against insects, frost, rust, etc.; protective agent.
- proteinase — any of a group of enzymes that are capable of hydrolyzing proteins.
- protestant — any Western Christian who is not an adherent of a Catholic, Anglican, or Eastern Church.
- protistans — any of various one-celled organisms, classified in the kingdom Protista, that are either free-living or aggregated into simple colonies and that have diverse reproductive and nutritional modes, including the protozoans, eukaryotic algae, and slime molds: some classification schemes also include the fungi and the more primitive bacteria and blue-green algae or may distribute the organisms between the kingdoms Plantae and Animalia according to dominant characteristics.
- protogenia — the first woman born after the great flood of Zeus, daughter of Deucalion and Pyrrha.
- protohuman — of, relating to, or resembling extinct hominid populations that had some but not all the features of modern Homo sapiens.
- provitamin — a substance that an organism can transform into a vitamin, as carotene, which is converted to vitamin A in the liver.
- pteranodon — a flying reptile of the extinct order Pterosauria, from the Cretaceous Period, having a wingspread of about 25 feet (8 meters).
- punctuator — to mark or divide (something written) with punctuation marks in order to make the meaning clear.
- pyromantic — divination by fire, or by forms appearing in fire.
- quartation — the adding of silver to a mixture of gold and silver until the ratio is about one to three, at which point the silver can be removed using nitric acid
- quaternion — a group or set of four persons or things.
- quatorzain — a verse of fourteen lines
- rabinowitz — Solomon, Aleichem, Sholom.
- racemation — a bunch, collection, or group
- raconteurs — Plural form of raconteur.
- raconteuse — a woman who is skilled in relating stories and anecdotes interestingly.
- radication — the act or process of taking root
- rainforest — a tropical forest, usually of tall, densely growing, broad-leaved evergreen trees in an area of high annual rainfall.
- rat poison — substance toxic to rodents
- rationally — agreeable to reason; reasonable; sensible: a rational plan for economic development.
- rawsthorne — Alan. 1905–71, English composer, whose works include three symphonies, several concertos, and a set of Symphonic Studies (1939)
- razor-thin — A razor-thin majority or profit is a very small one.
- re-contact — the act or state of touching; a touching or meeting, as of two things or people.
- re-enactor — a person who re-enacts something
- reactional — a reverse movement or tendency; an action in a reverse direction or manner.
- readoption — the adoption of something or someone again
- recitation — an act of reciting.
- recontract — an agreement between two or more parties for the doing or not doing of something specified.
- recreation — the act of creating anew.
- recusation — the act of recusing a judge
- refraction — Physics. the change of direction of a ray of light, sound, heat, or the like, in passing obliquely from one medium into another in which its wave velocity is different.
- refutation — an act of refuting a statement, charge, etc.; disproof.
- regelation — a phenomenon in which the freezing point of water is lowered by the application of pressure; the melting and refreezing of ice, at constant temperature, caused by varying the pressure.
- regulation — a law, rule, or other order prescribed by authority, especially to regulate conduct.