18-letter words containing s, t, r, a
- orientation course — induction into sth
- orthotungstic acid — an oxyacid acid of tungsten. Formula: H2WO4
- osteitis deformans — Paget's disease.
- osteogenic sarcoma — osteosarcoma
- osteoradionecrosis — bone tissue death induced by radiation.
- outer automorphism — an automorphism that is not an inner automorphism.
- ovariohysterectomy — Surgical removal of the ovaries and uterus.
- overdraft interest — interest charged on money withdrawn in excess of the credit balance of a bank or building society account
- overpressurization — pressure in excess of normal atmospheric pressure, as that caused by an explosion's shock wave or created in an accelerating airplane.
- overrepresentation — to give too much representation to; represent in numbers that are disproportionately high.
- overspecialization — excessive specialization, as in a field of study.
- owen stanley range — a mountain range in SE New Guinea. Highest peak: Mount Victoria, 4073 m (13 363 ft)
- ox-tongue partisan — a shafted weapon having a long, wide, tapering blade.
- paediatric nursing — the branch of nursing concerned with the care of children
- pair of spectacles — a score of 0 in each innings of a match
- par for the course — an equality in value or standing; a level of equality: The gains and the losses are on a par.
- parathyroid glands — any of several small oval glands usually lying near or embedded in the thyroid gland.
- parliamentarianism — advocacy of a parliamentary system of government.
- particeps criminis — an accomplice in a crime.
- pass the hat round — to collect money, as for a cause
- passing-out parade — a ceremonial parade of cadets who have completed their training
- 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.
- pathname separator — (file system) The character used to separate elements of a path or pathname. Under Unix and POSIX.1 compliant systems the pathname separator is the (forward) slash, in MS-DOS backslash serves the same purpose. For obvious reasons the no directory or file name can contain this character.
- patron of the arts — someone who acts as a patron to or supports charities, organizations, and individuals that work in or concern the arts
- pay one's respects — a particular, detail, or point (usually preceded by in): to differ in some respect.
- payment by results — a system of wage payment whereby all or part of the wage varies systematically according to the level of work performance of an employee
- peasant proprietor — a peasant who owns land, especially the land he or she tills.
- pectoral sandpiper — an American sandpiper, Calidris melanotos, the male of which, when courting, inflates its chest conspicuously.
- 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.
- pedestrian traffic — the people coming and going on foot in a street, town, etc
- pellitory of spain — a small Mediterranean plant, Anacyclus pyrethrum, the root of which contains an oil formerly used to relieve toothache: family Asteraceae (composites)
- per ardua ad astra — through difficulties to the stars: the motto of the RAF
- performance artist — an artist that is involved in a theatrical presentation that incorporates various art forms, such as dance, sculpture, music, etc
- permanent hardness — hardness of water that cannot be removed by boiling as it results mainly from the presence of calcium and magnesium chlorides and sulphates
- permanent resident — an immigrant who has been given official residential status, often prior to being granted citizenship
- personal assistant — aide
- personal exemption — Your personal exemption is the amount of money that is deducted from your gross income before you have to start paying income tax.
- 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.
- phosphatidylserine — any of a class of phospholipids occurring in biological membranes and fats
- photoisomerization — isomerization induced by light.
- physical chemistry — the branch of chemistry dealing with the relations between the physical properties of substances and their chemical composition and transformations.
- physical inventory — To carry out a physical inventory is to count all the stock on hand.
- physical therapist — sb who performs physiotherapy
- pilotless aircraft — an aircraft equipped for operation by radio or by robot control, without a human pilot aboard; drone.
- pitch-and-run shot — chip shot.
- plumber's merchant — a shop or business that sells things needed for the job of installing and repairing pipes, fixtures, etc, for water, drainage, and gas
- political prisoner — sb imprisoned for political dissidence
- polynesian tattler — a sandpiper, H. incanus, native to the Pacific coastal regions