12-letter words containing t, r, o, p
- pastry board — a flat board on which pastry is rolled
- pasture rose — a bristly-stemmed rose, Rosa carolina, of the eastern U.S., having slender, straight thorns and large, solitary, rose-pink flowers.
- patent flour — a fine grade of flour, consisting chiefly of the inner part of the endosperm.
- patent rolls — (in Britain) the register of patents issued
- patroclinous — inheritance in which the traits of the offspring are derived primarily from the paternal parent (opposed to matrocliny).
- patrol wagon — an enclosed truck or van used by the police to transport prisoners.
- patron saint — a saint regarded as the special guardian of a person, group, trade, country, etc.
- pattern book — collection of textile motifs or designs
- pay court to — to court, as for favor or love
- payout ratio — the ratio between dividends paid out and earnings per share of common stock within a time period.
- pearl button — a button (as for fastening a shirt, blouse, etc) made of pearl or mother-of-pearl
- pearl oyster — any of several marine bivalve mollusks of the family Pteriidae, some of which form pearls of great value, inhabiting waters of eastern Asia and off the coasts of Panama and Baja California.
- pectoral fin — (in fishes) either of a pair of fins usually situated behind the head, one on each side, and corresponding to the forelimbs of higher vertebrates.
- pectoriloquy — vocalization through the chest wall, indicating a cavity or consolidation of the lung
- pedantocracy — rule by pedants; a system of government by pedants
- peer-to-peer — (networking) 1. The kind of communication found in a system using layered protocols. Each software or hardware component can be considered to communicate only with its peer in the same layer via the connection provided by the lower layers. 2. A decentralised file sharing system like BitTorrent, Gnutella or Kazaa where computers that download data also store that data and serve it to other downloaders. This increases the total bandwidth available in proportion to the number of users and so reduces download time. It also improves resilience by providing multiple redundant sources for the same data. This contrasts with client-server where all clients download the data from a single server (or mirror), sharing its fixed bandwidth. Peer-to-peer networks are typically ad-hoc and rely on users sharing the content they have downloaded for the benefit of other users. Users who fail to do this are called "leaches". A "seed" is a node on a peer-to-peer network that is sharing a complete copy of a file, as opposed to other nodes that may only have some of the parts into which the file has been split.
- pen computer — a computer, as a personal digital assistant, having pattern-recognition software enabling it to read handwritten text or drawings input on the screen by means of a stylus.
- penetrometer — a device for measuring the penetrating power of x-ray or other radiations.
- pentacrinoid — a larval crinoid resembling members of the genus Pentacrinus
- pentahydroxy — (of a molecule) containing five hydroxyl groups.
- pentyl group — any of the univalent, isomeric groups having the formula C 5 H 1 1 –.
- perambulator — baby carriage.
- perceptional — the act or faculty of perceiving, or apprehending by means of the senses or of the mind; cognition; understanding.
- percutaneous — administered, removed, or absorbed by way of the skin, as an injection, needle biopsy, or transdermal drug.
- peremptorily — leaving no opportunity for denial or refusal; imperative: a peremptory command.
- perfectation — the action or process of becoming or causing to become perfect or complete
- perforations — the holes punched that allow individual stamps, coupons, etc to be easily separated
- performative — (of an expression or statement) performing an act by the very fact of being uttered, as with the expression “I promise,” that performs the act of promising.
- perfusionist — a medical technician or nurse who monitors and operates equipment that oxygenates the blood, as during open-heart surgery
- pericynthion — the point at which a spacecraft launched from earth into a lunar orbit is nearest the moon
- perinatology — a field of medicine focusing on problems emerging during the perinatal period.
- period costs — Period costs are general costs that cannot be associated with a particular product, such as utilities or insurance.
- periodontics — the branch of dentistry dealing with the study and treatment of diseases of the periodontium.
- periodontist — a specialist in periodontics.
- periodontium — the bone, connective tissue, and gum surrounding and supporting a tooth.
- periostracum — the external, chitinlike covering of the shell of certain mollusks that protects the limy portion from acids.
- peristeronic — of, pertaining to, or resembling pigeons
- peristomatic — surrounding a leaf's stoma or stomata
- peritoneally — through the peritoneum
- peritrichous — (of bacteria) having a uniform distribution of flagella over the body surface.
- perle cotton — a two-ply mercerized cotton thread used chiefly in handweaving and needlework.
- pernoctation — the act of staying all night in a place, esp for prayer or as a vigil
- perorational — of, pertaining to, or characteristic of a peroration
- 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
- peroxyborate — perborate.
- perpetration — to commit: to perpetrate a crime.
- perpetuation — to make perpetual.
- perquisition — an intensive and meticulous examination, pursuit, or hunt for something
- perseverator — a person who perseverates
- persian knot — a hand-tied knot, used in rug weaving, in which the ends of yarn looped around a warp thread appear at each of the interstices between adjacent threads and produce a compact and relatively even pile effect.