18-letter words containing p, y, o, s, i
- hypophysis cerebri — the master endocrine gland, attached by a stalk to the base of the brain.
- hyposulfurous acid — an acid, H 2 S 2 O 4 , next in a series below sulfurous acid, known only in solution or in the form of its salts.
- hypothesis testing — the theory, methods, and practice of testing a hypothesis concerning the parameters of a population distribution (the null hypothesis) against another (the alternative hypothesis) which will be accepted only if its probability exceeds a predetermined significance level, generally on the basis of statistics derived from random sampling from the given population
- in company with sb — If you feel, believe, or know something in company with someone else, you both feel, believe, or know it.
- in praise of folly — Latin Moriae Encomium. a prose satire (1509) by Erasmus, written in Latin and directed against theologians and church dignitaries.
- investment company — a company that invests its funds in other companies and issues its own securities against these investments.
- jump discontinuity — a discontinuity of a function at a point where the function has finite, but unequal, limits as the independent variable approaches the point from the left and from the right. Compare jump (def 52).
- keep your shirt on — refrain from losing your temper (often used as an exhortation to another)
- knights of pythias — a fraternal order founded in Washington, D.C., in 1864.
- lipopolysaccharide — any of a class of polysaccharides to which lipids are attached.
- logically possible — capable of being described without self-contradiction
- maternity hospital — birthing facility
- methylprednisolone — A synthetic glucocorticoid drug, with chemical formula C22H30O5.
- minority president — (in the US) a president who has been elected by the largest number of votes cast but not by a majority of the electorate
- mucopolysaccharide — (formerly) glycosaminoglycan.
- natural philosophy — natural science.
- nebular hypothesis — the theory that the solar system evolved from a mass of nebular matter: prominent in the 19th century following its precise formulation by Laplace.
- 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.
- neurophysiological — the branch of physiology dealing with the functions of the nervous system.
- neuropsychodynamic — Of or pertaining to neuropsychodynamics.
- neuropsychological — Of or pertaining to neuropsychology, the relation or combination of brain and mind.
- non-responsibility — the state or fact of being responsible, answerable, or accountable for something within one's power, control, or management.
- normally aspirated — A normally aspirated or naturally aspirated engine breathes air at atmospheric pressure.
- not a pretty sight — If you say that someone or something is not a pretty sight, you mean that it is not pleasant to look at.
- offset lithography — offset (def 6).
- old curiosity shop — a novel (1840–41) by Dickens.
- on everyone's lips — being much discussed
- orthopedic surgery — corrective operation on bones or joints
- oscillographically — By means of oscillography.
- parathyroid glands — any of several small oval glands usually lying near or embedded in the thyroid gland.
- passive vocabulary — all the words, collectively, that a person can understand
- payload specialist — an astronaut trained to handle highly complex or classified equipment carried aboard a space shuttle and to conduct experiments in space.
- pellitory of spain — a small Mediterranean plant, Anacyclus pyrethrum, the root of which contains an oil formerly used to relieve toothache: family Asteraceae (composites)
- 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.
- philosophy of life — any philosophical view or vision of the nature or purpose of life or of the way that life should be lived.
- phosphatidylserine — any of a class of phospholipids occurring in biological membranes and fats
- physical education — systematic instruction in sports, exercises, and hygiene given as part of a school or college program.
- physical geography — the branch of geography concerned with natural features and phenomena of the earth's surface, as landforms, drainage features, climates, soils, and vegetation.
- physical inventory — To carry out a physical inventory is to count all the stock on hand.
- pigmy hippopotamus — a related but smaller animal, Choeropsis liberiensis
- play second fiddle — be considered less important
- point set topology — topology (def 2).
- polynesian tattler — a sandpiper, H. incanus, native to the Pacific coastal regions
- population density — ratio: inhabitants to area
- positively charged — having a positive charge
- post-revolutionary — of, pertaining to, characterized by, or of the nature of a revolution, or a sudden, complete, or marked change: a revolutionary junta.
- postviral syndrome — debilitating condition occurring as a sequel to viral illness
- potassium myronate — sinigrin.