12-letter words containing p, r, e, o, t, n
- paranthelion — a bright spot in the sky caused by refraction and occurring at an angular distance from the sun of between 90° and 140°
- parathormone — a hormone secreted by the parathyroids, important in the control of the calcium-phosphorus balance of the body
- parent group — a large organization that owns a number of smaller separate commercial or industrial firms
- partial tone — one of the pure tones forming a part of a complex tone.
- pastoralness — the quality or state of being pastoral or rural
- 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
- pattern book — collection of textile motifs or designs
- pearl button — a button (as for fastening a shirt, blouse, etc) made of pearl or mother-of-pearl
- 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.
- pedantocracy — rule by pedants; a system of government by pedants
- 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 –.
- 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.
- 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
- 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.
- 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.
- peristeronic — of, pertaining to, or resembling pigeons
- peritoneally — through the peritoneum
- 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
- perpetration — to commit: to perpetrate a crime.
- perpetuation — to make perpetual.
- perquisition — an intensive and meticulous examination, pursuit, or hunt for something
- 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.
- pertinacious — holding tenaciously to a purpose, course of action, or opinion; resolute.
- perturbation — the act of perturbing.
- pest control — rats, insects: extermination
- 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.
- petrogenesis — the branch of petrology dealing with the origin and formation of rocks.
- petrogenetic — relating to petrogenesis
- phanerophyte — a tree or shrub that bears its perennating buds more than 25 cm above the level of the soil
- phenocrystic — relating to a phenocryst
- photocurrent — an electric current produced by a photoelectric effect.
- photoengrave — to make a photoengraving of.
- photoneutron — a neutron emitted from a nucleus during photodisintegration.