18-letter words containing y, a, m, o
- pigmy hippopotamus — a related but smaller animal, Choeropsis liberiensis
- plane trigonometry — the branch of trigonometry dealing with plane triangles.
- play cat and mouse — Also called cat and rat. a children's game in which players in a circle keep a player from moving into or out of the circle and permit a second player to move into or out of the circle to escape the pursuing first player.
- play someone false — to deceive, cheat, hoodwink, or betray someone
- pneumatic conveyor — a tube through which powdered or granular material, such as cement, grain, etc is transported by a flow of air
- politically-minded — (of a person or group of people) interested in the way power is achieved and used in a country or society (through government, policy-making, etc)
- polychromatophilic — having an affinity for more than one kind of stain, especially for acid, neutral, and basic stains, as polychromatophilic erythroblasts characteristic of pernicious anemia.
- population pyramid — a graph showing the distribution of a population by sex, age, etc.
- postviral syndrome — debilitating condition occurring as a sequel to viral illness
- potassium myronate — sinigrin.
- prayer of manasses — a book of the Apocrypha.
- 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
- production company — an organization which produces, films, plays, television or radio programmes
- programme of study — the prescribed syllabus that pupils must be taught at each key stage in the National Curriculum
- pseudo-symptomatic — pertaining to a symptom or symptoms.
- psychogalvanometer — a type of galvanometer for detecting and measuring psychogalvanic currents.
- psychopharmacology — the branch of pharmacology dealing with the psychological effects of drugs.
- publishing company — a firm which publishes books
- 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
- pygmy hippopotamus — a small hippopotamus, Choeropsis liberiensis, of forests and swamps in western Africa.
- pyromucic aldehyde — furfural.
- racially motivated — motivated by (the hate or prejudice of) someone's race
- raman spectroscopy — a form of spectroscopy which uses the Raman effect for studying molecules
- random walk theory — the theory that the future movement of share prices does not reflect past movements and therefore will not follow a discernible pattern
- rapid eye movement — rapidly shifting, continuous movements of the eyes beneath closed lids during the stage of sleep characterized by dreaming.
- registered company — a company which has officially registered its business
- relative major key — a major key that has the same key signature as a minor key, but a different tonic
- relative minor key — a minor key that has the same key signature as a major key, but a different tonic
- repayment mortgage — a mortgage that you pay back in monthly repayments which consist of the accrued interest in addition to the original amount borrowed
- respiratory system — the system by which oxygen is taken into the body and an exchange of oxygen and carbon dioxide takes place; in mammals the system includes the nasal passages, pharynx, trachea, bronchi, and lungs.
- restoration comedy — English comedy of the period of the Restoration, stressing manners and social satire.
- rheims-douay bible — Douay Bible.
- rhyming dictionary — a specialist dictionary organized by the final sounds of words, used to write poetry
- room occupancy tax — Room occupancy tax is a tax that guests at a hotel have to pay in order to stay there.
- running commentary — non-stop description of sth
- secondary consumer — (in the food chain) a carnivore that feeds only upon herbivores.
- secondary emission — the emission of electrons (secondary electrons) from a material that is bombarded with electrons or ions.
- semi-microanalysis — any analytical method in which the weight of the sample is between 10 and 100 milligrams.
- september holidays — a period of time in September when people do not have to go to school, college or work
- significant symbol — a verbal or nonverbal gesture, as a word or smile, that has acquired a conventionalized meaning.
- slow-motion replay — a showing again in slow motion of a sequence of action, esp of part of a sporting contest immediately after it happens
- sodium thiocyanate — a white powder or colorless, deliquescent crystals, NaSCN, used chiefly in organic synthesis and in medicine in the treatment of hypertension.
- spherical geometry — the branch of geometry that deals with figures on spherical surfaces.
- state of emergency — If a government or other authority declares a state of emergency in an area, it introduces special measures such as increased powers for the police or army, usually because of civil disorder or because of a natural disaster such as an earthquake.
- stoichiometrically — of or relating to stoichiometry.
- stokely carmichael — Hoagland Howard [hohg-luh nd] /ˈhoʊg lənd/ (Show IPA), ("Hoagy") 1899–1981, U.S. songwriter and musician.
- subsidiary company — a company whose controlling interest is owned by another company.
- summary proceeding — a mode of trial authorized by statute to be held before a judge without the usual full hearing.
- surveyor's compass — an instrument used by surveyors for measuring azimuths.
- surveyor's measure — a system of units of length used in surveying land, based on the surveyor's chain of 66 feet (20.12 meters) and its 100 links of 7.92 inches (20.12 cm).