12-letter words containing m, o, r, a, t
- overtime pay — a higher than normal rate of pay, for work done as overtime
- palindromist — a word, line, verse, number, sentence, etc., reading the same backward as forward, as Madam, I'm Adam or Poor Dan is in a droop.
- panchromatic — sensitive to all visible colors, as a photographic film.
- parathormone — a hormone secreted by the parathyroids, important in the control of the calcium-phosphorus balance of the body
- parma violet — a variety of the sweet violet, Viola odorata, that is the source of an essential oil used in perfumery.
- paronomastic — the use of a word in different senses or the use of words similar in sound to achieve a specific effect, as humor or a dual meaning; punning.
- part company — a portion or division of a whole that is separate or distinct; piece, fragment, fraction, or section; constituent: the rear part of the house; to glue the two parts together.
- perambulator — baby carriage.
- 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.
- periostracum — the external, chitinlike covering of the shell of certain mollusks that protects the limy portion from acids.
- peristomatic — surrounding a leaf's stoma or stomata
- pharmacolite — hydrous calcium arsenate, 2CaO⋅As 2 O 5 ⋅5H 2 O, formed by natural alteration of mineral deposits containing arsenopyrite and arsenical ores of cobalt and silver.
- pharyngotomy — surgical incision into the pharynx
- photorealism — a style of painting flourishing in the 1970s, especially in the U.S., England, and France, and depicting commonplace scenes or ordinary people, with a meticulously detailed realism, flat images, and barely discernible brushwork that suggests and often is based on or incorporates an actual photograph.
- phragmoplast — the cytoplasmic structure that forms at the equator of the spindle after the chromosomes have divided during the anaphase of plant mitosis, and that initiates cell division.
- pictorialism — Fine Arts. the creation or use of pictures or visual images, especially of recognizable or realistic representations.
- placentiform — shaped like a placenta, with a flat rounded form
- plasma torch — an electrical device for converting a gas into a plasma, used for melting metal
- plate armour — armour made of thin metal plates, which superseded mail during the 14th century
- platform bed — a bed, originating in Scandinavia in the 1930s, consisting of a simple shallow box for holding a mattress situated on a slightly recessed pedestal.
- platform car — a railroad freight car having no enclosing sides or top; a flatcar.
- pneumothorax — the presence of air or gas in the pleural cavity.
- porismatical — porismatic
- portal frame — a frame, usually of steel, consisting of two uprights and a cross beam at the top: the simplest structural unit in a framed building or a doorway
- porto amelia — former name of Pemba (def 2).
- post-primary — first or highest in rank or importance; chief; principal: his primary goals in life.
- postal meter — a postal franking machine
- postimperial — of, relating to, or designating the period after an empire
- postliminary — of or relating to postliminy
- postmeridian — of or relating to the afternoon.
- postorgasmic — of or relating to the period after an orgasm
- postromantic — of or relating to the period after Romanticism
- pot marigold — calendula (def 1).
- pot marjoram — oregano.
- poultry farm — place where fowl are bred
- power-stream — to stream and watch (multiple videos, episodes of a TV show, etc.) in one sitting or over a short period of time.
- preallotment — an allotment given in advance.
- 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
- premigration — occurring before migration
- primary root — the first root produced by a germinating seed, developing from the radicle of the embryo.
- prime factor — any number in the set of prime numbers that is also a factor of a given integer
- primogenital — relating to primogeniture
- pro-military — of, for, or pertaining to the army or armed forces, often as distinguished from the navy: from civilian to military life.
- problematics — problems or difficulties in a particular situation or subject
- problematize — to demonstrate to be unsettled or uncertain, or more complex than originally assumed or regarded; show to be problematic
- proclamation — something that is proclaimed; a public and official announcement.
- product mark — a trademark used on only one product.