18-letter words containing p, a, c
- pair of spectacles — a score of 0 in each innings of a match
- pairs championship — an event in a sport such as tennis or darts open to pairs of competitors
- paleoclimatologist — the branch of paleogeography dealing with the study of paleoclimates.
- palm beach gardens — a city in SE Florida, near North Palm Beach.
- palmer archipelago — a group of islands in the South Atlantic Ocean, off the NW coast of the Antarctic Peninsula.
- pan american union — a former organization of American republics dedicated to furthering understanding and peace: replaced in 1970 by the secretariat of the Organization of American States.
- pan-indian dancing — fancy dance (def 1).
- paper handkerchief — a handkerchief made from tissue paper
- par for the course — an equality in value or standing; a level of equality: The gains and the losses are on a par.
- parachute regiment — an airborne regiment of an army
- parallactic motion — the apparent motion of stars due to the earth's orbital motion.
- parallel computing — parallel processing
- parallel processor — (parallel) A computer with more than one central processing unit, used for parallel processing.
- parallel reduction — A form of applicative order reduction in which all redexes in an expression are reduced simultaneously. Variants include parallel outermost reduction and lenient reduction. See normal order reduction.
- parallel resonance — the resonance that results when circuit elements are connected with their inductance and capacitance in parallel, so that the impedance of the combination rises to a maximum at the resonant frequency
- particeps criminis — an accomplice in a crime.
- particular average — a loss at sea, as through accident or negligence, that is borne solely by the owner of the lost property. Abbreviation: P.A.
- particulate filter — A particulate filter is a filter to remove particles that are present the air, for example in the exhaust of a diesel engine.
- particulate matter — Particulate matter is solid or liquid particles in the air, which are measured in PM-10 units and are particles with a diameter of ten micrometers or less.
- passive resistance — opposition to a government or to specific governmental laws by the use of noncooperation and other nonviolent methods, as economic boycotts and protest marches.
- passive vocabulary — all the words, collectively, that a person can understand
- pathologic anatomy — the branch of pathology dealing with the morphologic changes in tissues.
- pay one's respects — a particular, detail, or point (usually preceded by in): to differ in some respect.
- payload specialist — an astronaut trained to handle highly complex or classified equipment carried aboard a space shuttle and to conduct experiments in space.
- payment in advance — If a business asks for payment in advance, the payment must be received in full before the goods or services are delivered.
- pci mezzanine card — (hardware) (PMC) A family of low profile mezzanine cards for VMEbus, Futurebus+, desktop computers and other computer systems with logical and electrical layers based on the Peripheral Component Interconnect (PCI) specification. PMC is defined in IEEE P1386.1 and follows the Common Mezzanine Card (CMC) mechanical specification. PCI2.0 defines a 4.2 inch by 12.3 inch board that plugs perpendicularly into a mother board.
- peacekeeping force — a force designated to the maintenance of peace, esp the prevention of further fighting between hostile forces in an area
- pectoral sandpiper — an American sandpiper, Calidris melanotos, the male of which, when courting, inflates its chest conspicuously.
- pedestrian traffic — the people coming and going on foot in a street, town, etc
- pennsylvania dutch — the descendants of 17th- and 18th-century settlers in Pennsylvania from southwest Germany and Switzerland.
- people trafficking — the practice of bringing immigrants into a country illegally
- people's democracy — (in Communist ideology) a country or form of government in transition from bourgeois democracy to socialism. In this stage there is more than one class, the largest being the proletariat, led by the Communist Party, which is therefore the dominant power
- peppermint camphor — menthol.
- percentile ranking — the percentage of scores that a particular score is greater than
- perceptual defence — the process by which it is thought that certain stimuli are either not perceived or are distorted due to their offensive, unpleasant, or threatening nature
- perceptual mapping — the use of a graph or map in the development of a new product, in which the proximity of consumers' images of the new product to those of an ideal product provide an indication of the new product's likely success
- percussion flaking — a method of forming a flint tool by striking flakes from a stone core with another stone or a piece of bone or wood.
- perfect participle — past participle.
- perforated tracery — tracery, as in early Gothic architecture, formed of cut or pierced slabs of stone set on edge with the flat side outward.
- performance artist — an artist that is involved in a theatrical presentation that incorporates various art forms, such as dance, sculpture, music, etc
- perlocutionary act — the action of affecting someone by uttering certain words
- pernicious anaemia — Pernicious anaemia is a very severe blood disease.
- perpetual calendar — a calendar devised to be used for many years, as in determining the day of the week on which a given date falls.
- personal allowance — the amount of money you are allowed to earn each year without paying tax
- personal insurance — insurance on personal risk, such as car insurance, health insurance or loss of earnings insurance
- pescadores-islands — (used with a plural verb) Penghu.
- peter tschaikowsky — Peter Ilyich [il-yich] /ˈɪl yɪtʃ/ (Show IPA), Tchaikovsky, Peter Ilyich.
- phanerocrystalline — (of a rock) having the principal constituents in the form of crystals visible to the naked eye.
- phantasmagorically — having a fantastic or deceptive appearance, as something in a dream or created by the imagination.
- phenylacetaldehyde — a colorless, oily, water-insoluble liquid, C 3 H 1 4 O, having a hyacinthlike odor: used chiefly in perfumery.