15-letter words containing a, g, r, i, e, n
- prekindergarten — a school or class for young children between the ages of four and six years.
- preregistration — early registration, in advance of event or general registration
- primary sealing — Primary sealing is devices used for sealing tanks, to reduce emissions, often made of foam.
- prince charming — (sometimes lowercase) a man who embodies a woman's romantic ideal.
- private hearing — a formal or official trial that is not open to the public
- pro-integration — an act or instance of combining into an integral whole.
- process heating — Process heating is heating, usually from steam, which is used to increase the temperature in a process vessel.
- pseudepigraphon — any book of the Pseudepigrapha
- psion organiser — (computer) A popular pocket computer from the UK Company Psion plc. The organiser uses a graphical user interface with windows, menus, icons and dialog boxes. There have been several versions so far: Series3a, Series3, HC, MC, OrgII.
- pyramid selling — Pyramid selling is a method of selling in which one person buys a supply of a particular product direct from the manufacturer and then sells it to a number of other people at an increased price. These people sell it on to others in a similar way, but eventually the final buyers are only able to sell the product for less than they paid for it.
- quadragenarians — Plural form of quadragenarian.
- quarantine flag — a yellow flag, designating the letter Q in the International Code of Signals: flown by itself to signify that a ship has no disease on board and requests a pratique, or flown with another flag to signify that there is disease on board ship.
- quarter binding — a style of bookbinding in which the spine is leather and the sides are cloth or paper.
- quasi-sovereign — a monarch; a king, queen, or other supreme ruler.
- quinquagenarian — 50 years of age.
- radiant heating — the means of heating objects or persons by radiation in which the intervening air is not heated.
- radiogoniometer — a device used to detect the direction of radio waves, consisting of a coil that is free to rotate within two fixed coils at right angles to each other
- radiogoniometry — the science of detecting the direction of radio waves
- radiotechnology — the technical application of any form of radiation to industry.
- ramjet (engine) — a jet engine, without moving parts, in which the air for oxidizing the fuel is continuously compressed by being rammed into the inlet by the high velocity of the aircraft
- range paralysis — Marek's disease.
- reaction engine — an engine that produces power as a reaction to the momentum given to gases ejected from it, as a rocket or jet engine.
- reading glasses — spectacles
- reading the law — that part of the morning service on Sabbaths, festivals, and Mondays and Thursdays during which a passage is read from the Torah scrolls
- reality testing — the objective evaluation of situations, defective in certain psychoses, that enable one to distinguish between the external and the internal worlds and between the self and the nonself.
- reaping machine — any of various machines for reaping grain, often fitted with a device for automatically throwing out bundles of the cut grain.
- recognizability — to identify as something or someone previously seen, known, etc.: He had changed so much that one could scarcely recognize him.
- reconfiguration — to change the shape or formation of; remodel; restructure.
- record-breaking — top, most successful
- recording angel — an angel who supposedly keeps a record of every person's good and bad acts
- recycling plant — a factory for processing used or abandoned materials
- refamiliarizing — to make (onself or another) well-acquainted or conversant with something.
- regimental band — a band made up of a military formation varying in size from a battalion to a number of battalions
- regionalization — the process or tendency of dividing a country into administrative regions
- registered name — the official or trademark name of something such as a product or company
- regulation time — the standard duration of a sports game, before the addition of any extra time to determine a winner, etc
- reinterrogation — a second or new interrogation or inquiry
- relapsing fever — one of a group of fevers characterized by relapses, occurring in many tropical countries, and caused by several species of spirochetes transmitted by several species of lice and ticks.
- remonstratingly — in an remonstrating or dissenting manner
- rendering plant — a factory where waste products and livestock carcasses are converted into industrial fats and oils (such as tallow, used to make soap) and other products (such as fertilizer)
- repeating group — (database) Any attribute that can have multiple values associated with a single instance of some entity. For example, a book might have multiple authors. Such a "-to-many" relationship might be represented in an unnormalised relational database as multiple author columns in the book table or a single author(s) column containing a string which was a list of authors. Converting this to "first normal form" is the first step in database normalisation. Each author of the book would appear in a separate row along with the book's primary key. Later nomalisation stages would move the book-author relationship into a separate table to avoid repeating other book attibutes (e.g. title, publisher) for each author.
- revenue sharing — the system of disbursing part of federal tax revenues to state and local governments for their use.
- reversing falls — a series of rapids in the Saint John River, New Brunswick, Canada, the flow of which regularly reverses itself owing to the force an incoming tide
- reviewing stand — A reviewing stand is a special raised platform from which military and political leaders watch military parades.
- revolving stage — a circular platform divided into segments enabling multiple theater sets to be put in place in advance and in turn rotated into view of the audience.
- rhesus negative — relating to blood not containing Rhesus antigen D
- rigel kentaurus — Alpha Centauri.
- right ascension — the arc of the celestial equator measured eastward from the vernal equinox to the foot of the great circle passing through the celestial poles and a given point on the celestial sphere, expressed in degrees or hours.
- rigil kentaurus — Astronomy. Alpha Centauri.
- ringtail monkey — a Central and South American monkey, Cebus capucinus, having a prehensile tail and hair on the head resembling a cowl.