12-letter words containing p, a, t, m, r
- achromatopia — Defective ability to see colours.
- achromatopsy — Color blindness; inability to distinguish colors; daltonism, achromatopia.
- actinomorphy — The condition of being actinomorphic.
- alpha rhythm — the normal bursts of electrical activity from the cerebral cortex of a drowsy or inactive person, occurring at a frequency of 8 to 12 hertz and detectable with an electroencephalograph
- amethopterin — (now rare) Methotrexate.
- amor patriae — love of one's country; patriotism
- amperometric — relating to or involving the measurement of an electric current
- amphitheater — An amphitheater is a large open area surrounded by rows of seats sloping upward. Amphitheaters were built mainly in Greek and Roman times for the performance of plays.
- amphitheatre — An amphitheatre is a large open area surrounded by rows of seats sloping upwards. Amphitheatres were built mainly in Greek and Roman times for the performance of plays.
- amphitropous — (of a plant ovule) partially inverted so that the base and the micropyle at the apex are the same distance from the funicle
- amphotericin — an amphoteric antibiotic produced by the bacterium Streptomyces nodosus and used in the treatment of fungal infections.
- anemotropism — orientation in response to a current of air.
- anisotropism — the state of being anisotropic
- anthroponomy — the science dealing with the laws regulating the development of the human organism in relation to other organisms and to environment.
- anthroponymy — the study of personal names.
- anthropotomy — the structure of the human body
- antiparabema — either of two chapels at the west end of an Armenian or Byzantine church.
- apartmentize — to build apartments on or in: to apartmentize the downtown area.
- apochromatic — (of a lens) almost free from spherical and chromatic aberration
- appraisement — the act of estimating or judging the nature or value of something or someone.
- approachment — (archaic) approach.
- approximated — near or approaching a certain state, condition, goal, or standard.
- approximates — near or approaching a certain state, condition, goal, or standard.
- approximator — Something that approximates.
- arc spectrum — a spectrum formed from the light produced by an electric arc, characteristic of the gas or vapor through which the arc passes.
- armor-plated — An armor-plated vehicle or building has a hard metal covering in order to protect it from gunfire and other missiles.
- armour plate — a tough heavy steel, usually containing chromium, nickel, and molybdenum and often hardened on the surface, used for protecting warships, tanks, etc
- aromatherapy — Aromatherapy is a type of treatment which involves massaging the body with special fragrant oils.
- astrocompass — a navigational instrument for giving directional bearings from the centre of the earth to a particular star. It is carried in long-range aircraft, ships, spacecraft, etc
- at a premium — If something is at a premium, it is wanted or needed, but is difficult to get or achieve.
- atmospherics — Atmospherics are elements in something such as a piece of music or a book which create a certain atmosphere.
- atmospherium — an optical system used to simulate images of atmospheric phenomena, as cloud formations, storms, and day and night, on the inside of a dome.
- atomic power — nuclear power.
- autapomorphy — (cladistics) A derived trait that is unique to a particular taxon.
- automorphism — the practice of seeing others as having the same characteristics as oneself
- bach trumpet — a modern small three-valved trumpet for playing clarino passages in Bach's music
- bad-tempered — Someone who is bad-tempered is not very cheerful and gets angry easily.
- beamsplitter — Alternative spelling of beam splitter.
- bracket lamp — a wall light that is attached to the wall by a bracket
- camper truck — a pickup truck having a camper mounted on the truck body.
- camphor tree — a lauraceous evergreen E Asian tree, Cinnamomum camphora, whose aromatic wood yields camphor
- camphorating — Present participle of camphorate.
- carpetmonger — a person who frequently visits women's boudoirs
- carry permit — a license to carry a handgun on one's person.
- cephalometer — an instrument for positioning the human head for X-ray examination in cephalometry
- cephalometry — measurement of the dimensions of the human head by radiography: used mainly in orthodontics
- chapter room — a room for the use of the chapter of a religious institution
- chemotherapy — Chemotherapy is the treatment of disease using chemicals. It is often used in treating cancer.
- chromatophil — Also, chromatophilic, chromatophilous [kroh-muh-tof-uh-luh s] /ˌkroʊ məˈtɒf ə ləs/ (Show IPA). chromophil (def 1).
- chromatopsia — an irregularity in the ability to see colours properly
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