12-letter words containing p, r, o, x
- open texture — the failure of natural languages to determine future usage, particularly the ability of predicates to permit the construction of borderline cases
- oropharynxes — Plural form of oropharynx.
- over-complex — composed of many interconnected parts; compound; composite: a complex highway system.
- over-explain — to make plain or clear; render understandable or intelligible: to explain an obscure point. Synonyms: explicate. Antonyms: confuse.
- overexplicit — excessively explicit
- overexposure — excessive exposure, especially of photographic film or a sensitized plate to light rays.
- oxford group — an organization founded at Oxford University in 1921 by Frank Buchman, advocating absolute morality in public and private life.
- paradoxidian — relating to the genus Paradoxides
- paradoxology — a statement or proposition that seems self-contradictory or absurd but in reality expresses a possible truth.
- paradoxurine — relating to the palm civet
- pentahydroxy — (of a molecule) containing five hydroxyl groups.
- peroxidation — a type of reaction in which oxygen atoms are formed leading to the production of peroxides. It is stimulated in the body by certain toxins and infections
- peroxy group — the bivalent group –O 2 –, derived from hydrogen peroxide.
- peroxyborate — perborate.
- pneumothorax — the presence of air or gas in the pleural cavity.
- polar vortex — a whirling mass of very cold air that sits over the North or South Pole: A displaced polar vortex is causing Arctic temperatures across the United States.
- pony express — a former system in the American West of carrying mail and express by relays of riders mounted on ponies, especially the system operating (1860–61) between St. Joseph, Missouri, and Sacramento, California.
- postexercise — bodily or mental exertion, especially for the sake of training or improvement of health: Walking is good exercise.
- postexposure — occurring after a photo or image has been taken
- praxinoscope — a toy in which a sequence of images, depicted on the inner surface of a cylinder and reflected in a series of mirrors, gives the illusion of motion as the cylinder rotates
- property tax — a tax levied on real or personal property.
- propoxyphene — Pharmacology. a nonnarcotic analgesic, C 2 2 H 2 9 NO 2 .
- protosynthex — A query system for English text.
- proximities' — nearness in place, time, order, occurrence, or relation.
- proxy server — (software, security) (Capitalised) Microsoft's proxy server and proxy gateway, designed to provide extensible firewall and network security. Proxy Server is part of BackOffice.
- pyridoxamine — a metabolic form of pyridoxine
- sexual spore — a spore formed after the fusion of gametes and an asexual spore is the result of asexual reproduction
- solar plexus — Also called celiac plexus. Anatomy. a network of nerves situated at the upper part of the abdomen, behind the stomach and in front of the aorta.
- trophallaxis — (among social insects) the exchange of nutriments or other secretions between members of a colony.
- twin paradox — a phenomenon predicted by relativity. One of a pair of identical twins is supposed to live normally in an inertial system whilst the other is accelerated to a high speed in a spaceship, travels for a long time, and finally returns to rest beside his twin. The travelled twin will be found to be younger than his brother
- underexploit — to make insufficient use of
- underexposed — If a photograph is underexposed, it is darker than it should be because the film was not exposed to enough light.
- unexplorable — to traverse or range over (a region, area, etc.) for the purpose of discovery: to explore the island.
- vortex depth — The vortex depth is the depth below an impeller at which its influence can still be seen in a mixed fluid.
- xanthopterin — a yellow pigment, C6H5N5O2, found in some butterfly or moth wings or in the urine of mammals