19-letter words containing a, c, n, t, h
- operations research — the analysis, usually involving mathematical treatment, of a process, problem, or operation to determine its purpose and effectiveness and to gain maximum efficiency.
- orthopaedic surgeon — a surgeon specializing in the branch of surgery concerned with disorders of the spine and joints and the repair of deformities of these parts
- overhead projection — the projection (using an overhead projector) of an enlarged image of a transparency onto a surface above and behind the person using it
- parachute spinnaker — a very large spinnaker used on a racing yacht.
- parthenogenetically — development of an egg without fertilization.
- particle technology — Particle technology is knowledge and study which relates to particles, and is used in industry.
- paschen-back effect — a splitting of spectral lines observed when the source of a radiation is subjected to a strong magnetic field, caused when the vectors associated with the spin and orbital angular momentum exhibit individual rather than common precession.
- phacoemulsification — the removal of a cataract by first liquefying the affected lens with ultrasonic vibrations and then extracting it by suction.
- phakoemulsification — the removal of a cataract by first liquefying the affected lens with ultrasonic vibrations and then extracting it by suction.
- phenylethyl alcohol — phenethyl alcohol.
- phenylthiocarbamide — a crystalline, slightly water-soluble solid, C 6 H 5 NHCSNH 2 , that is either tasteless or bitter, depending upon the heredity of the taster, and is used in medical genetics and as a diagnostic.
- photoreconnaissance — reconnaissance using aerial photography.
- phthalocyanine blue — a pigment used in painting, derived from copper phthalocyanine and characterized chiefly by its brilliant, dark-blue color and by permanence.
- physical impairment — A physical impairment is a condition in which a part of a person's body is damaged or is not working properly.
- physical sequential — (file format) (PS, QSAM, Queued Sequential Access Method) The simplest data set on an IBM mainframe. Sequential files can only be read or written from the beginning: they do not support random access.
- physician assistant — a person trained and certified to perform various medical procedures under the supervision of a physician
- piece of the action — the process or state of acting or of being active: The machine is not in action now.
- pinwheel escapement — a clock escapement in which two pallets, usually of unequal length, alternately engage and release pins set on the escape wheel perpendicular to its plane of rotation.
- pocket-handkerchief — handkerchief (def 1).
- postsynchronization — the process of adding sound, such as dubbing, to a film or video after shooting or videotaping is completed
- prescription charge — a charge, set by the government, to be paid by a patient for medicines
- proton-proton chain — a series of thermonuclear reactions, responsible for the energy production in stars like the sun, in which the nuclei of hydrogen atoms are transformed into helium nuclei by sequential addition of single hydrogen nuclei.
- psychotechnological — of or relating to psychotechnology
- put sth into action — If you put an idea or policy into action, you begin to use it or cause it to operate.
- quick on the uptake — You say that someone is quick on the uptake when they understand things quickly. You say that someone is slow on the uptake when they have difficulty understanding simple or obvious things.
- quick-change artist — a person adept at changing from one thing to another, as an entertainer who changes costumes quickly during a performance.
- rap on the knuckles — a mild reprimand or light sentence
- rayleigh scattering — the scattering of light by particles that are very small in relation to the wavelength of the light, and in which the intensity of the scattered light varies inversely with the fourth power of the wavelength.
- redress the balance — to make a fair adjustment; see that justice is done
- resorcinolphthalein — fluorescein.
- reticuloendothelial — pertaining to, resembling, or involving cells of the reticuloendothelial system.
- revenue enhancement — a new tax or a tax increase.
- rhetorical question — a question asked solely to produce an effect or to make an assertion and not to elicit a reply, as “What is so rare as a day in June?”.
- rhythmic gymnastics — a form of gymnastics involving movements using hand apparatus such as balls, hoops, and ribbons
- right circular cone — a cone whose surface is generated by lines joining a fixed point to the points of a circle, the fixed point lying on a perpendicular through the center of the circle.
- ring up the curtain — to begin a theatrical performance
- sackcloth and ashes — a public display of extreme grief, remorse, or repentance
- sandwich generation — the generation of people still raising their children while having to care for their aging parents.
- scare the pants off — to scare extremely
- scattersite housing — public housing, especially for low-income families, built throughout an urban area rather than being concentrated in a single neighborhood.
- semidetached binary — a pair of stars that are so close together that mass transfer occurs from one to the other
- seventh commandment — “Thou shalt not commit adultery”: seventh of the Ten Commandments.
- shopping facilities — shops or other retail services
- sissinghurst castle — a restored Elizabethan mansion near Cranbrook in Kent: noted for the gardens laid out in the 1930s by Victoria Sackville-West and Harold Nicolson
- social anthropology — study of human culture
- son-of-a-bitch stew — (in the Old West) a stew often prepared by chuck-wagon cooks for working cowboys, containing tripe and often also the heart, liver, brains, kidney, etc., of a slaughtered steer.
- south african dutch — the Boers.
- south pacific ocean — the part of the Pacific Ocean extending S from the Equator to the Antarctic continent.
- south san francisco — a city in central California.
- southern crab apple — a tree, Malus angustifolia, of the eastern U.S., having oblong leaves, fragrant, pink or rose-colored flowers, and small, round, yellow-green fruit.