12-letter words containing r, t, f
- prefectorial — of, relating to, or characteristic of a prefect: prefectorial powers.
- preferential — of, relating to, or of the nature of preference: preferential policies.
- prefloration — the internal arrangement of a flower-bud's petals and sepals before it opens
- prefoliation — the arrangement of leaves within a vegetative bud
- preformation — previous formation.
- preformative — a prefixture in Semitic languages
- preformatted — the shape and size of a book as determined by the number of times the original sheet has been folded to form the leaves. Compare duodecimo, folio (def 2), octavo, quarto.
- preformulate — to describe an active pharmaceutical ingredient chemically
- pressed felt — Pressed felt is a material made from compressed fibers and used as a filter.
- presser foot — a forked, metal device on a sewing machine used for holding the fabric in place while stitching.
- prime factor — any number in the set of prime numbers that is also a factor of a given integer
- private life — the social or family life or personal relationships of an individual, esp of a person in the public eye, such as a politician or celebrity
- prizefighter — a contest between boxers for a prize, a sum of money, etc.; a professional boxing match.
- professorate — the office or the period of service of a professor.
- proficiently — well-advanced or competent in any art, science, or subject; skilled: a proficient swimmer.
- profiteering — a person who seeks or exacts exorbitant profits, especially through the sale of scarce or rationed goods.
- profitlessly — in such a way as to not yield profit, as in financial gains or general benefits or advantages
- proof sheets — trial impressions made from composed type, or print-outs (from a laser printer, etc) read for the correction of errors; proofs
- proof spirit — an alcoholic liquor, or mixture of alcohol and water, containing a standard amount of alcohol. In the U.S. proof spirit has a specific gravity of .93353 (containing one half of its volume of alcohol of a specific gravity of .7939 at 60° F). In Britain proof spirit has a specific gravity of .91984.
- proof stress — the load per unit area that a structure can withstand without being permanently deformed by more than a specified amount.
- proof theory — (logic) The branch of logic describing procedures for combining logical statements to show, by a series of truth-preserving transformations, that one statement is a consequence of some other statement or group of statements.
- protest flag — a flag hoisted by a racing yacht to advise the judges of a violation of the rules by another yacht.
- purification — to make pure; free from anything that debases, pollutes, adulterates, or contaminates: to purify metals.
- put down for — If you put someone down for something, you write down their name and the fact that they are going to do, give, or buy that thing.
- putrefaction — the act or process of putrefying; the anaerobic decomposition of organic matter by bacteria and fungi that results in obnoxiously odorous products; rotting.
- putrefactive — the act or process of putrefying; the anaerobic decomposition of organic matter by bacteria and fungi that results in obnoxiously odorous products; rotting.
- pyritiferous — having or producing pyrites
- qualificator — (in an ecclesiastical court) an officer charged with examining cases and preparing them for trial.
- quarterfinal — of or relating to the contest or round preceding the semifinal one.
- quarterstaff — a former English weapon consisting of a stout pole 6 to 8 feet (1.8 to 2.4 meters) long, tipped with iron.
- rabbit fever — tularemia.
- rabbitfishes — Plural form of rabbitfish.
- radiant flux — the time rate of flow of radiant energy.
- radical left — the faction representing extreme left-wing political views, often Marxist or Maoist in ideology.
- rail traffic — the vehicles, passengers, or freight that are moving from place to place by railway
- raman effect — the change in wavelength of light scattered while passing through a transparent medium, the collection of new wavelengths (Raman spectrum) being characteristic of the scattering medium and differing from the fluorescent spectrum in being much less intense and in being unrelated to an absorption band of the medium.
- ramification — the act or process of ramifying.
- rat-infested — (of a place or vessel) that has many rats
- rate of flow — the rate at which a liquid or other substance flows through a particular channel, pipe etc
- ratification — the act of ratifying; confirmation; sanction.
- recentrifuge — to subject (a liquid) to the action of a centrifuge again
- recomforture — consolation; comfort
- red goatfish — a goatfish, Mullus auratus.
- redefinition — the act of defining, or of making something definite, distinct, or clear: We need a better definition of her responsibilities.
- reflationary — economy: relating to reflation
- reflectively — that reflects; reflecting.
- reflectivity — that reflects; reflecting.
- reflectogram — an image of an under-drawing or image taken from beneath the surface of paint in a work of art
- reflectorize — to treat something so that it reflects light: to reflectorize license plates.
- reformatting — the shape and size of a book as determined by the number of times the original sheet has been folded to form the leaves. Compare duodecimo, folio (def 2), octavo, quarto.