14-letter words containing s, e, p, i, o
- pacific oyster — Japanese oyster.
- paedomorphosis — the resemblance of adult animals to the young of their ancestors: seen in the evolution of modern man, who shows resemblances to the young stages of australopithecines
- palacio valdes — Armando [ahr-mahn-daw] /ɑrˈmɑn dɔ/ (Show IPA), 1853–1938, Spanish novelist and critic.
- palaebiologist — a person who studies or is an expert in palaebiology
- paleobiologist — the branch of paleontology dealing with fossil life forms, especially with reference to their origin, structure, evolution, etc.
- paleoecologist — the branch of ecology dealing with the relations and interactions between ancient life forms and their environment.
- paleomagnetism — Geology. magnetic polarization acquired by the minerals in a rock at the time the rock was deposited or solidified.
- paleontologist — the science of the forms of life existing in former geologic periods, as represented by their fossils.
- panic disorder — a disorder in which inappropriate, intense apprehension and physical symptoms of fear occur so frequently as to produce significant impairment.
- papilionaceous — having an irregular corolla shaped somewhat like a butterfly, as the pea and other leguminous plants.
- pararosaniline — a colourless crystalline alcohol, a component of the red dye fuchsin, also used as a biological stain
- parish records — historical documents of a district
- parking sensor — A parking sensor is a device on a vehicle which detects obstacles and alerts the driver if the vehicle comes too close to them when being parked.
- passion killer — something that is sexually unattractive or inhibiting
- passive reason — the reasoning faculty existing only within an individual mind, limited in scope and perishing with the body.
- pasteurellosis — hemorrhagic septicemia.
- pasteurization — to expose (a food, as milk, cheese, yogurt, beer, or wine) to an elevated temperature for a period of time sufficient to destroy certain microorganisms, as those that can produce disease or cause spoilage or undesirable fermentation of food, without radically altering taste or quality.
- pay for itself — If something that you buy or invest in pays for itself after a period of time, the money you gain from it, or save because you have it, is greater than the amount you originally spent or invested.
- pay television — a commercial service that broadcasts or provides television programs to viewers who pay a monthly charge or a per-program fee.
- peacock's tail — a handsome brown seaweed, Padina pavonia (though coloured yellow-olive, red, and green) whose fan-shaped fronds have concentric bands of iridescent hairs
- peano's axioms — a collection of axioms concerning the properties of the set of all positive integers, including the principle of mathematical induction.
- pembroke pines — a city in SE Florida, near Fort Lauderdale.
- pension scheme — savings fund for retirement
- pentecostarion — a service book of offices for the period from Easter to the Sunday after Pentecost.
- percussion cap — a small metallic cap or cup containing fulminating powder, formerly exploded by percussion to fire the charge of small arms.
- peremptoriness — leaving no opportunity for denial or refusal; imperative: a peremptory command.
- perfidiousness — deliberately faithless; treacherous; deceitful: a perfidious lover.
- period costume — the attire typical of a particular period in time
- peritoneoscopy — an endoscopy examining the peritoneal cavity
- peritrichously — in a peritrichous manner; in a fashion characteristic of a peritrichous organism
- persian violet — any of several plants belonging to the genus Exacum, native to the Old World, as E. affine, having glossy, ovate leaves, and fragrant, bluish flowers: cultivated as a houseplant.
- personal chair — a professorship awarded in recognition of academic achievement
- pertinaciously — holding tenaciously to a purpose, course of action, or opinion; resolute.
- peso boliviano — a nickel-clad steel coin, paper money, and monetary unit of Bolivia, equal to 100 centavos: replaced the boliviano in 1963.
- petrochemicals — substances, such as acetone or ethanol, obtained from petroleum or natural gas
- petrochemistry — the branch of chemistry dealing with petroleum or its products.
- petrol station — A petrol station is a garage by the side of the road where petrol is sold and put into vehicles.
- petrophysicist — a person who studies, or is an expert in, petrophysics
- phallocentrism — a doctrine or belief centered on the phallus, especially a belief in the superiority of the male sex.
- phase velocity — the velocity with which a simple harmonic wave is propagated, equal to the wavelength divided by the period of vibration.
- phenolic resin — any of the class of thermosetting resins formed by the condensation of phenol, or of a phenol derivative, with an aldehyde, especially formaldehyde: used chiefly in the manufacture of paints and plastics and as adhesives for sandpaper and plywood.
- phenosafranine — safranine (def 2).
- philosophaster — a person who has only a superficial knowledge of philosophy or who feigns a knowledge he or she does not possess.
- philosopheress — a philosopher who is a woman
- phonochemistry — the branch of chemistry concerned with the chemical effects of sound and ultrasonic waves
- phosphoprotein — a protein, as casein or ovalbumin, in which one or more hydroxyl groups of serine, threonine, or tyrosine are hydroxylated.
- photochemistry — the branch of chemistry that deals with the chemical action of light.
- photogeologist — a person who studies or has a profession in photogeology
- photoluminesce — to produce photoluminescence
- photoperiodism — the response, as affecting growth or reproduction, of an organism to the length of exposure to light in a 24-hour period.