18-letter words containing p, a, h, n, g
- open-heart surgery — surgery performed on the exposed heart while a heart-lung machine pumps and oxygenates the blood and diverts it from the heart.
- optical brightener — an additive that dyes and brightens fabric or paper
- palaeoanthropology — the branch of anthropology concerned with primitive man
- palm beach gardens — a city in SE Florida, near North Palm Beach.
- parachute regiment — an airborne regiment of an army
- paraglyph printing — the printing of the positive and negative of a radiograph superimposed in slight misalignment to give the effect of a relief.
- parathyroid glands — any of several small oval glands usually lying near or embedded in the thyroid gland.
- paraurethral gland — any of a group of vestigial glands located in the posterior wall of the urethra in women.
- pathologic anatomy — the branch of pathology dealing with the morphologic changes in tissues.
- phantasmagorically — having a fantastic or deceptive appearance, as something in a dream or created by the imagination.
- phase-shift keying — (communications) (PSK) A digital modulation scheme that conveys data by changing the phase of a carrier wave. The data can either determine the absolute phase relative to the unmodulated carrier or reference signal ("coherent phase-shift keying", CPSK) or the change in phase ("differential phase-shift keying", DPSK). The number of different phases used determines the amount of data that can be transmitted in each cycle. Each cycle can be considered to constitute one "symbol", e.g. with two possible phases, each cycle carries one bit. The more phases that are used, the less tollerant to noise the transmissions becomes. Alternatives to PSK are amplitude-shift keying (ASK) and frequency-shift keying (FSK).
- phytohemagglutinin — a lectin, obtained from the red kidney bean, that binds to the membranes of T cells and stimulates metabolic activity, cell division, etc.
- plains grasshopper — a large, destructive short-horned grasshopper, Brachystola magna, of the western U.S., marked by pinkish hind wings.
- prepare the ground — make conditions ready
- prerelease showing — a showing of a film before it goes on general release
- propaganda machine — the group of people, publications, etc, such as of a government, country etc, responsible for the organized dissemination of information, allegations, etc, to assist or damage the cause of a government, movement, etc
- psychogalvanometer — a type of galvanometer for detecting and measuring psychogalvanic currents.
- publishing company — a firm which publishes books
- punishment beating — a form of corporal punishment carried out by a paramilitary organization on a member of another sectarian organization, usually in Northern Ireland
- purchasing officer — the member of staff in an organization who is responsible for buying goods or products
- segmental phonemes — phonemes consisting of sound segments; hence, the vowel, consonant, and semivowel sounds of a language
- shape-note singing — a traditional style of a capella singing using shape-note notation.
- shipping container — a large, strong container, usually of metal, used to store goods in during shipment
- shunting operation — an operation in which rail coaches are manoeuvred
- something to spare — a surplus of something
- sound spectrograph — an electronic device for recording a sound spectogram.
- spaghetti junction — an interchange, usually between motorways, in which there are a large number of underpasses and overpasses and intersecting roads used by a large volume of high-speed traffic
- spherical triangle — a triangle formed by arcs of great circles of a sphere.
- sympathetic string — a thin wire string, as in various obsolete musical instruments, designed to vibrate sympathetically with the bowed or plucked strings to reinforce the sound.
- teaching equipment — teaching aids
- telephone exchange — a telecommunications facility to which subscribers' telephones connect, that switches calls among subscribers or to other exchanges for further routing.
- the general public — the people in a society; people in general
- the passenger seat — the seat used by a passenger of a car, beside the driver
- to stop at nothing — If you say that someone will stop at nothing to get something, you are emphasizing that they are willing to do things that are extreme, wrong, or dangerous in order to get it.
- to take the plunge — If you take the plunge, you decide to do something that you consider difficult or risky.
- whispering gallery — a space or gallery beneath a dome or broad arch in which low sounds produced at any of certain points are clearly audible at certain other distant points.