18-letter words containing a, m, e, r, i, s
- neo-pythagoreanism — a philosophical system, established in Alexandria and Rome in the second century b.c., consisting mainly of revived Pythagorean doctrines with elements of Platonism and Stoicism.
- neuropsychodynamic — Of or pertaining to neuropsychodynamics.
- neutrino astronomy — the branch of astronomy dealing with the detection and measurement of neutrinos emitted by the sun and other celestial objects.
- nightmare scenario — If you describe a situation or event as a nightmare scenario, you mean that it is the worst possible thing that could happen.
- nike of samothrace — a Greek marble statue (c200 b.c.) of Nike found at Samothrace and now in the Louvre, Paris.
- nocturnal emission — the release of semen during sleep, often during a sexual dream.
- nominative-address — a noun naming the person to whom one is speaking.
- non-discriminative — constituting a particular quality, trait, or difference; characteristic; notable.
- nonpreferentialism — of, relating to, or of the nature of preference: preferential policies.
- nonstriated muscle — smooth muscle
- normally aspirated — A normally aspirated or naturally aspirated engine breathes air at atmospheric pressure.
- numerical analysis — the branch of mathematics dealing with methods for obtaining approximate numerical solutions of mathematical problems.
- offensive material — any published or broadcast content (such as articles, photographs, films, or websites) that is likely to be upsetting, insulting, or objectionable to some or most people
- operations manager — business director
- optical microscope — traditional magnifying instrument
- osteitis deformans — Paget's disease.
- osteogenic sarcoma — osteosarcoma
- outer automorphism — an automorphism that is not an inner automorphism.
- ovariohysterectomy — Surgical removal of the ovaries and uterus.
- parliamentarianism — advocacy of a parliamentary system of government.
- particeps criminis — an accomplice in a crime.
- pemphigus vulgaris — a potentially fatal blistering skin disease, characterized by large blisters on the skin, mucous membranes of the mouth, genitals, intestines, etc, which eventually rupture and form painful denuded areas from which critical amounts of bodily protein, fluid, and blood may be lost
- performance artist — an artist that is involved in a theatrical presentation that incorporates various art forms, such as dance, sculpture, music, etc
- permanent resident — an immigrant who has been given official residential status, often prior to being granted citizenship
- pernicious anaemia — Pernicious anaemia is a very severe blood disease.
- 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.
- physical chemistry — the branch of chemistry dealing with the relations between the physical properties of substances and their chemical composition and transformations.
- postmillenarianism — postmillennialism.
- postviral syndrome — debilitating condition occurring as a sequel to viral illness
- potassium chlorate — a white or colorless, crystalline, water-soluble, poisonous solid, KClO 3 , used chiefly as an oxidizing agent in the manufacture of explosives, fireworks, matches, bleaches, and disinfectants.
- potassium chloride — a white or colorless, crystalline, water-soluble solid, KCl, used chiefly in the manufacture of fertilizers and mineral water, and as a source of other potassium compounds.
- potassium fluoride — a white, crystalline, hygroscopic, toxic powder, KF, used chiefly as an insecticide, a disinfectant, and in etching glass.
- potassium myronate — sinigrin.
- presenile dementia — a form of dementia, of unknown cause, starting before a person is old
- pressure altimeter — an aneroid barometer adapted for measuring altitude by converting the indicated atmospheric pressure to altitude according to a standard relationship.
- 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.
- primus inter pares — (of males) first among equals.
- prisoner's dilemma — (in game theory) a scenario in which the outcome of one person's decision is determined by the simultaneous decisions of the other participants, resulting in a bad outcome for all of them if all act in their own self-interest.
- 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
- provision merchant — a person or company in the business of retailing food and other provisions
- pulmonary embolism — the blockage of a pulmonary artery, often by a blood clot, that stops the flow of blood to the lungs and which can result in death if untreated
- pulmonic airstream — a current of lung air set in motion by the respiratory muscles in the production of speech.
- 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
- radical empiricism — (in the philosophy of William James) the doctrine that the only proper subject matter of philosophy is that which can be defined in terms of experience, and that relations are a part of experience.
- 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.