18-letter words containing a, p, i, r, y
- aerial photography — Aerial photography is the process of taking photographs of an area from above, for example from an airplane or mast.
- algebraic topology — the branch of mathematics that deals with the application of algebraic methods to topology, especially the study of homology and homotopy.
- alpha-hydroxy acid — a type of organic acid, commonly used in skin-care preparations, that has a hydroxyl group attached to the carbon atom next to the carbon atom carrying the carboxyl group
- anterior pituitary — a small, somewhat cherry-shaped double structure attached by a stalk to the base of the brain and constituting the master endocrine gland affecting all hormonal functions in the body, consisting of an anterior region ((anterior pituitary) or (adenohypophysis)) that develops embryonically from the roof of the mouth and that secretes growth hormone, LH, FSH, ACTH, TSH, and MSH, a posterior region ((posterior pituitary) or (neurohypophysis)) that develops from the back of the forebrain and that secretes the hormones vasopressin and oxytocin, and an intermediate part (pars intermedia) derived from the anterior region but joined to the posterior region, that secretes the hormone MSH in lower vertebrates.
- anthropocentricity — the state or quality of being anthropocentric.
- anti-masonic party — a former political party (1826–35) that opposed Freemasonry in civil affairs.
- aperture synthesis — an array of radio telescopes used in radio astronomy to simulate a single large-aperture telescope. Some such instruments use movable dishes while others use fixed dishes
- arachibutyrophobia — Fear of peanut butter sticking to the roof of one's mouth.
- army of occupation — an army that goes into a defeated country to enforce peace terms, keep order, etc.
- asymptotic freedom — a property of the force between quarks, according to quantum chromodynamics, such that they behave almost like free particles when they are close together within a hadron.
- at your fingertips — If you say that something is at your fingertips, you approve of the fact that you can reach it easily or that it is easily available to you.
- auditory phonetics — the branch of phonetics concerned with the perception of speech sounds by humans
- autobiographically — In a autobiographical manner.
- biological therapy — biotherapy
- burkitt's lymphoma — a cancer characterized by tumors containing lymphoid cells, occurring esp. in children, in the jaw, eyes, and internal organs: it is associated with the Epstein-Barr virus
- chemical pregnancy — a pregnancy that is confirmed by a pregnancy test but not by clinical signs and terminates before clinical signs can be observed.
- chronostratigraphy — The branch of geology concerned with establishing the absolute ages of strata.
- claustrophobically — In a claustrophobic way.
- complexity measure — (algorithm) A quantity describing the complexity of a computation.
- conservative party — The Conservative Party is the main right-of-centre party in Britain.
- constituency party — a branch of a political party operating within a constituency
- corporate identity — business brand
- corpus christi bay — a bay in S Texas, at the mouth of the Nueces River.
- cranial osteopathy — osteopathy that focuses on the cranium and the spine
- creeping paralysis — any slow process that causes a system, government, etc, to stop working efficiently
- cross-disciplinary — linking two or more fields of study
- crystal microphone — a microphone that uses a piezoelectric crystal to convert sound energy into electrical energy
- daisywheel printer — (printer) A kind of impact printer where the characters are arranged on the ends of the spokes of a wheel (resembling the petals on a daisy). The wheel (usually made of plastic) is rotated to select the character to print and then an electrically operated hammer mechanism bends the selected spoke forward slightly, sandwiching an ink ribbon between the character and the paper, as in a typewriter. One advantage of this arrangement over that of a typewriter is that different wheels may be inserted to produce different typefaces.
- decachlorobiphenyl — (organic compound) The fully chlorinated polychlorinated biphenyl containing ten chlorine atoms.
- depository library — a library designated by law to receive without charge all or a selection of the official publications of a government.
- dietary supplement — a substance taken in addition to what you eat in order to promote health
- dimethyltryptamine — a hallucinogenic drug, C 12 H 16 N 2 , with an action of short duration. Abbreviation: DMT.
- diphosphoglycerate — an ester of phosphoric acid and glyceric acid that occurs in the blood and that promotes the release of hemoglobin-bound oxygen.
- display postscript — An extended form of PostScript permitting its interactive use with bitmap displays.
- disproportionality — not in proportion; disproportionate.
- disproportionately — not proportionate; out of proportion, as in size or number.
- doctype decoration — (humour) When a web author adds a doctype declaration but doesn't bother to write valid HTML.
- dry-powder inhaler — A dry-powder inhaler is a device that delivers medication to the lungs in the form of a dry powder.
- economic geography — a branch of geography that deals with the relation of physical and economic conditions to the production and utilization of raw materials and their manufacture into finished products.
- european community — an economic and political association of European States that came into being in 1967, when the legislative and executive bodies of the European Economic Community merged with those of the European Coal and Steel Community and the European Atomic Energy Community: subsumed into the European Union in 1993
- gensym corporation — (company) A company that supplies software and services for intelligent operations management. Common applications include quality management, process optimisation, dynamic scheduling, network management, energy and environmental management, and process modelling and simulation. Their products include G2.
- grand penitentiary — See under penitentiary (def 3).
- gravity escapement — an escapement, used especially in large outdoor clocks, in which the impulse is given to the pendulum by means of a weight falling through a certain distance.
- hexachlorobiphenyl — (organic compound) Either of forty-two isomers of the polychlorinated biphenyl containing six chlorine atoms.
- hilary of poitiers — Saint, a.d. c300–368, French bishop and theologian.
- hydroxytryptamines — Plural form of hydroxytryptamine.
- hyper-intellectual — appealing to or engaging the intellect: intellectual pursuits.
- hyper-metaphorical — a figure of speech in which a term or phrase is applied to something to which it is not literally applicable in order to suggest a resemblance, as in “A mighty fortress is our God.”. Compare mixed metaphor, simile (def 1).
- hyperaldosteronism — aldosteronism.
- hyperbaric chamber — a steel vessel in which atmospheric pressure can be raised or lowered by air compressors, used to treat divers or pilots afflicted with aeroembolism and to provide high-oxygen environments for certain medical treatments and operations.
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