18-letter words containing a, g, l, u, t
- parallel computing — parallel processing
- paraurethral gland — any of a group of vestigial glands located in the posterior wall of the urethra in women.
- 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.
- passing modulation — a modulation of a temporary nature.
- pedal steel guitar — an oblong, floor-mounted electrified guitar, usually having ten strings, fretted with a steel bar and producing a wailing sound that is modulated by use of a foot pedal.
- 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
- phytohemagglutinin — a lectin, obtained from the red kidney bean, that binds to the membranes of T cells and stimulates metabolic activity, cell division, etc.
- pig-tailed macaque — a forest-dwelling southeast Asian macaque, Macaca nemestrina, having a short, curled tail, colonized for animal behavior studies.
- population figures — population totals; statistics relating to the size of populations
- principal argument — the radian measure of the argument between −π and π of a complex number. Compare argument (def 8c).
- publicity campaign — an effort to convey information to the public
- rear its ugly head — the upper part of the body in humans, joined to the trunk by the neck, containing the brain, eyes, ears, nose, and mouth.
- regular tertiaries — of the third order, rank, stage, formation, etc.; third.
- residual magnetism — remanence.
- rule of engagement — a directive issued by a military authority controlling the use and degree of force, especially specifying circumstances and limitations for engaging in combat.
- running martingale — martingale (def 2).
- safety regulations — regulations or rules that are put in place to ensure a product, event, etc, is safe and not dangerous
- sampling equipment — Sampling equipment is equipment which is used to remove small amounts of something for analysis and monitoring.
- scripting language — a language that is used to write scripts, or executable sections of code that automate tasks.
- self-understanding — mental process of a person who comprehends; comprehension; personal interpretation: My understanding of the word does not agree with yours.
- seven-league boots — mythical boots that allowed the wearer to travel seven leagues (a former unit of measurement), ie a great length, at each step
- shugart technology — Seagate Technology
- soft touch sealing — Soft touch sealing is a copolymer seal for a tank, with characteristics designed for softness, used instead of a metal seal to help avoid fire when sparks are generated.
- solid-fuel heating — heating that uses solid fuel, such as coal or coke
- stirling's formula — a relation that approximates the value of n factorial (n!), expressed as .
- structural geology — the branch of geology dealing with the structure and distribution of the rocks that make up the crust of the earth. Also called tectonics. Compare structure (def 7a).
- sugarloaf mountain — a mountain in SE Brazil in Rio de Janeiro, at the entrance to Guanabara Bay. 1280 feet (390 meters).
- super giant slalom — a slalom race in which the course is longer and has more widely spaced gates than in a giant slalom.
- supraorbital ridge — browridge.
- the beautiful game — football
- the class struggle — the continual conflict between the capitalist and working classes for economic and political power
- the general public — the people in a society; people in general
- theodore gericault — (Jean Louis André) Théodore [zhahn lwee ahn-drey tey-aw-dawr] /ʒɑ̃ lwi ɑ̃ˈdreɪ teɪ ɔˈdɔr/ (Show IPA), 1791–1824, French painter.
- to plough a furrow — If you say that someone ploughs a particular furrow or ploughs their own furrow, you mean that their activities or interests are different or isolated from those of other people.
- to take the plunge — If you take the plunge, you decide to do something that you consider difficult or risky.
- touch-in-goal line — either of the two touchlines at each end of the field between the goal line and the dead-ball line.
- ultrasonic testing — the scanning of material with an ultrasonic beam, during which reflections from faults in the material can be detected: a powerful nondestructive test method
- ultrasonic welding — the use of high-energy vibration of ultrasonic frequency to produce a weld between two components which are held in close contact
- unilateral neglect — a symptom of brain damage in which a person is unaware of one side of his or her body and of anything in the external world on the same side
- unit magnetic pole — the unit of magnetic pole strength equal to the strength of a magnetic pole that repels a similar pole with a force of one dyne, the two poles being placed in a vacuum and separated by a distance of one centimeter.
- universal negative — a proposition of the form “No S is P.” Symbol: E, e.
- unpledged delegate — (in the US) a delegate at a national party convention who is free to vote for any candidate
- without obligation — In advertisements, if a product or a service is available without obligation, you do not have to pay for that product or service until you have tried it and are satisfied with it.
- wrangell mountains — a mountain range in SE Alaska, extending into the Yukon, Canada. Highest peak: Mount Blackburn, 5037 m (16 523 ft)