12-letter words containing p, o, e, t, r
- 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.
- perspiration — a salty, watery fluid secreted by the sweat glands of the skin, especially when very warm as a result of strenuous exertion; sweat.
- perspiratory — of, relating to, or stimulating perspiration.
- pertinacious — holding tenaciously to a purpose, course of action, or opinion; resolute.
- perturbation — the act of perturbing.
- pest control — rats, insects: extermination
- pester power — the ability possessed by a child to nag a parent relentlessly until the parent succumbs and agrees to the child's request
- pet passport — a document that officially records information related to a specific animal, as part of a scheme that allows animals to travel between member countries without undergoing quarantine
- petaliferous — bearing or having petals.
- peterborough — a city in Cambridgeshire, in central England.
- petrifaction — the act or process of petrifying; the state of being petrified.
- petrobrusian — a member of a 12th-century sect in S France that rejected the Mass, infant baptism, prayers for the dead, sacerdotalism, the veneration of the cross, and the building of churches.
- petrobutanol — butyl alcohol.
- petrochemist — someone who studies petrochemistry or works in the petrochemical industry
- petrodollars — Petrodollars are a unit of money used to calculate how much a country has earned by exporting petroleum or natural gas.
- petrogenesis — the branch of petrology dealing with the origin and formation of rocks.