13-letter words containing p, y, o, s
- onychophorans — Plural form of onychophoran.
- open registry — ship registration under a national flag available to all ships regardless of nationality.
- opisthography — the practice of writing on the front and back of a parchment or papyrus
- oppositionary — the action of opposing, resisting, or combating.
- opprobriously — In an opprobrious manner.
- orchesography — a written study of dancing
- oscillography — a device for recording the wave-forms of changing currents, voltages, or any other quantity that can be translated into electric energy, as sound waves.
- osteophytosis — Lb medicine The presence of osteophytes.
- palaeocrystic — consisting of former glacial formation
- paramyxovirus — any of various RNA-containing viruses that are similar to but larger than the myxoviruses, including the viruses that cause mumps, measles, parainfluenza, and Newcastle disease.
- parapophysial — of or relating to a parapophysis
- parapsychosis — an abnormal psychosis
- parasymbiosis — the symbiotic relationship that occurs between certain species of fungi and lichens (which are themselves symbiotic associations between a fungus and an alga)
- parasyntheton — a word formed by parasynthesis; for example, kind-hearted
- passamaquoddy — a member of a small tribe of North American Indians formerly of coastal Maine and New Brunswick and now living in Maine.
- patriot's day — the third Monday in April, a legal holiday in Me. and Mass. commemorating the battles of Lexington and Concord (April 19, 1775)
- patriots' day — the anniversary of the battles of Lexington and Concord (1775), celebrated the third Monday in April: a legal holiday in Massachusetts and Maine.
- pay a pension — If a company or government pays a pension to someone, it provides them with money because they have reached a certain age.
- pay as you go — the act of paying or being paid; payment.
- pay one's way — to settle (a debt, obligation, etc.), as by transferring money or goods, or by doing something: Please pay your bill.
- pay-as-you-go — the principle or practice of paying for goods and services at the time of purchase, rather than relying on credit.
- penobscot bay — an inlet of the Atlantic in S Maine. 30 miles (48 km) long.
- pensacola bay — an inlet of the Gulf of Mexico, in NW Florida. About 30 miles (48 km) long.
- perissodactyl — having an uneven number of toes or digits on each foot.
- petrophysical — relating to the analysis of the constitution and characteristics of rocks
- phantasmagory — phantasmagoria.
- pharmacognosy — materia medica (def 2).
- pharyngoscope — an instrument for inspecting the pharynx.
- pharyngoscopy — an examination by means of a pharyngoscope.
- phenoxy resin — any of a class of resins derived from polyhydroxy ethers
- phony disease — a disease of peaches, characterized by dwarfing, dark-green leaves, premature leafing and flowering, and the production of reduced numbers of small fruit, caused by a virus, Nanus mirabilis.
- phosphorylase — any enzyme, occurring widely in animal and plant tissue, that in the presence of an inorganic phosphate catalyzes the conversion of glycogen into sugar phosphate.
- phosphorylate — to introduce the phosphoryl group into (an organic compound).
- photodynamics — the science dealing with light and its effects on living organisms.
- photosynthate — a compound formed by photosynthesis.
- phyllocladous — having phylloclades.
- phyllophagous — (of an organism) feeding on leaves.
- physharmonica — a keyboard musical instrument fitted with free reeds, and which is an early form of harmonium
- physics model — a variety of software illustrating the movement of objects in reality, used by designers of video games to improve verisimilitude
- physiognomies — the face or countenance, especially when considered as an index to the character: a fierce physiognomy.
- physiographic — the science of physical geography.
- physiological — of or relating to physiology.
- physiotherapy — physical therapy.
- physoclistous — having the air bladder closed off from the mouth.
- physostigmine — an alkaloid, C 1 5 H 2 1 N 3 O 2 , used in the treatment of Alzheimer's disease to raise the level of the neurotransmitter acetylcholine and also as a miotic in glaucoma.
- phytocoenosis — the plants of a given area considered as a whole.
- phytoestrogen — an estrogen-like compound occurring naturally in plants of the legume family and in grains, vegetables, and fruits.
- phytosanitary — of or relating to the health of plants
- plastic money — credit cards, used instead of cash
- platykurtosis — the state of being platykurtic.