12-letter words containing a, l, t, m
- oval kumquat — a spineless shrub or small citrus tree, Fortunella margarita, of China, having oval-shaped, orange-yellow fruit with sweet and acid flesh.
- paleoclimate — the climate of some former period of geologic time.
- palimpsestic — a parchment or the like from which writing has been partially or completely erased to make room for another text.
- 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.
- paludamentum — a cloak worn by officials and military officers of ancient Rome, especially during wartime.
- paramilitary — noting or pertaining to an organization operating as, in place of, or as a supplement to a regular military force: a paramilitary police unit.
- parent metal — the metal of components that are being welded by a molten filler metal
- parma violet — a variety of the sweet violet, Viola odorata, that is the source of an essential oil used in perfumery.
- party animal — person who frequents drinking parties
- patellectomy — the surgical removal of the patella
- pearl millet — a tall grass, Pennisetum americanum (or P. glaucum), cultivated in Africa, Asia, and the southern U.S. for its edible seeds and as a forage plant.
- perambulator — baby carriage.
- perimetrical — the border or outer boundary of a two-dimensional figure.
- permaculture — a system of cultivation intended to maintain permanent agriculture or horticulture by relying on renewable resources and a self-sustaining ecosystem.
- permeability — the property or state of being permeable.
- perpetualism — a belief in the permanence of a given thing; the belief that a given thing (e.g. the world, a political system) will last forever
- phantasmical — pertaining to or of the nature of a phantasm; unreal; illusory; spectral: phantasmal creatures of nightmare.
- phantom limb — a phenomenon characterized by the experience of pain, discomfort, or other sensation in the area of a missing limb or other body part, as a breast.
- 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.
- phentolamine — an alpha blocker, C 1 7 H 1 9 N 3 O, used to reduce hypertensive states caused by a catecholamine excess, as in the treatment of pheochromocytoma.
- 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.
- phytoclimate — the climate of a small area, as of confined spaces such as caves or houses (cryptoclimate) of plant communities, wooded areas, etc. (phytoclimate) or of urban communities, which may be different from that in the general region.
- pictorialism — Fine Arts. the creation or use of pictures or visual images, especially of recognizable or realistic representations.
- piltdown man — a hypothetical early modern human, assigned to the genus Eoanthropus, whose existence was inferred from skull fragments that were allegedly found at Piltdown, England, in 1912 but were exposed as fraudulent through chemical analysis in 1953.
- pinealectomy — a surgical operation to remove the pineal gland
- placentiform — shaped like a placenta, with a flat rounded form
- planetesimal — one of the small celestial bodies that, according to one theory (planetesimal hypothesis) were fused together to form the planets of the solar system.
- plasma torch — an electrical device for converting a gas into a plasma, used for melting metal
- plasmosomata — a kind of nucleoli
- plastic bomb — a bomb made of plastic explosive.
- plastic foam — expanded plastic.
- plate armour — armour made of thin metal plates, which superseded mail during the 14th century
- plate warmer — a device for warming plates
- 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.
- plymouth bay — a small, well-protected bay on the coast of Massachusetts; the first permanent European settlement in New England; founded by the Pilgrim Fathers.
- pneumatology — Theology. doctrine concerning the Holy Spirit. the belief in intermediary spirits between humans and God.
- polycythemia — an abnormal increase in the number and concentration of circulating red blood corpuscles
- polygamistic — a person who practices or favors polygamy.
- 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).
- postal meter — a postal franking machine
- postimperial — of, relating to, or designating the period after an empire
- postliminary — of or relating to postliminy
- postmedieval — occurring or existing after the Middle Ages, of or related to the period after the Middle Ages
- pot marigold — calendula (def 1).
- potamologist — a specialist in potamology
- poultry farm — place where fowl are bred