18-letter words containing m, e, r, t, n, s
- particeps criminis — an accomplice in a crime.
- 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.
- 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
- 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 exemption — Your personal exemption is the amount of money that is deducted from your gross income before you have to start paying income tax.
- photoisomerization — isomerization induced by light.
- photomorphogenesis — plant development that is controlled by light.
- 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
- polystyrene cement — a purpose-made adhesive for fixing rigid polystyrene
- post-impressionism — a varied development of Impressionism by a group of painters chiefly between 1880 and 1900 stressing formal structure, as with Cézanne and Seurat, or the expressive possibilities of form and color, as with Van Gogh and Gauguin.
- postmaster general — the executive head of the postal system of a country.
- postmillenarianism — postmillennialism.
- postviral syndrome — debilitating condition occurring as a sequel to viral illness
- potassium myronate — sinigrin.
- precious moonstone — moonstone (def 1).
- presenile dementia — a form of dementia, of unknown cause, starting before a person is old
- presumption of law — a presumption based upon a policy of law or a general rule and not upon the facts or evidence in an individual case.
- prime-ministership — the principal minister and head of government in parliamentary systems; chief of the cabinet or ministry: the British prime minister.
- primus inter pares — (of males) first among equals.
- processionary moth — a moth of the family Thaumetopoeidae, esp the oak processionary moth (Thaumetopoea processionea), the larvae of which leave the communal shelter nightly for food in a V-shaped procession
- prometheus unbound — a drama in verse (1820) by Shelley.
- provision merchant — a person or company in the business of retailing food and other provisions
- psychogalvanometer — a type of galvanometer for detecting and measuring psychogalvanic currents.
- pulmonic airstream — a current of lung air set in motion by the respiratory muscles in the production of speech.
- put the mockers on — stop, thwart
- pyramus and thisbe — (in Greek legend) two lovers of Babylon: Pyramus, wrongly supposing Thisbe to be dead, killed himself and she, encountering him in his death throes, did the same
- quinacrine mustard — a nitrogen mustard derived from mepacrine and used as a stain for chromosomes
- raman spectroscopy — a form of spectroscopy which uses the Raman effect for studying molecules
- rattlesnake master — any of various plants of the genus Eryngium, especially E. yuccifolium, having spiny leaves and dense, rounded flower heads.
- recess appointment — a person appointed to an office by the President of the United States without approval from the Senate because the Senate is in recess
- registered company — a company which has officially registered its business
- remains to be seen — If you say that it remains to be seen whether something will happen, you mean that nobody knows whether it will happen.
- remanent magnetism — magnetization in minerals induced by a former magnetic field and persisting after the field changes.
- repayment schedule — a document detailing the specific terms of a borrower's loan, such as monthly payment, interest rate, due dates etc
- residual magnetism — remanence.
- resistance plasmid — any of a group of bacterial plasmids carrying genetic information that provide resistance to antibiotic drugs: some resistance plasmids are able to transfer themselves, and hence resistance, during conjugation
- restoration comedy — English comedy of the period of the Restoration, stressing manners and social satire.
- restriction enzyme — any of a group of enzymes that catalyze the cleavage of DNA molecules at specific sites: used for gene splicing in recombinant DNA technology and for chromosome mapping.
- resuscitation room — an intensive care unit
- retirement pension — income: no longer at work
- retrograde amnesia — a memory disorder characterized by an inability to remember events or experiences that occurred before a significant point in time.
- sault sainte marie — the rapids of the St. Marys River, between NE Michigan and Ontario, Canada.
- schengen agreement — an agreement, signed in 1985 at a meeting of European leaders near Schengen, Luxembourg, but not implemented until 1995, to gradually abolish border controls within Europe; it was supplemented in 1990 by the Schengen Convention; in 1999 the agreement was incorporated into European Union law. Twenty-six countries acceded by 2015; the UK is not a signatory
- seasonal promotion — Seasonal promotions are items marketed to customers at the appropriate time of year, such as coats in the winter and bathing suits in the summer.
- second triumvirate — the coalition and joint rule of the Roman Empire by Antony, Lepidus, and Octavian, begun in 43 bc
- security agreement — business: contract
- selenium rectifier — a rectifier consisting of laminated plates of metal, usually iron, that have been coated with selenium on one side, with rectification taking place because the flow of electrons from the conductive metal to the selenium occurs more readily than the flow in the opposite direction.
- self-advertisement — a paid announcement, as of goods for sale, in newspapers or magazines, on radio or television, etc.