13-letter words containing p, o, t, s
- photo-stating — a camera for making facsimile copies of documents, drawings, etc., in the form of paper negatives on which the positions of lines, objects, etc., in the originals are maintained.
- photoacoustic — optoacoustic
- photochromism — the reversible transformation of something's colour due to exposure to electromagnetic radiation such as sunlight
- photocomposer — a machine for setting type photographically.
- photodynamics — the science dealing with light and its effects on living organisms.
- photoemission — photoelectric effect.
- photofinisher — a person whose profession is photofinishing
- photophoresis — the move away from a strong light source by previously suspended particles in a gas
- photopositive — pertaining to a substance whose conductivity increases upon absorption of electromagnetic radiation.
- photosynthate — a compound formed by photosynthesis.
- photovoltaics — (used with a singular verb) a field of semiconductor technology involving the direct conversion of electromagnetic radiation as sunlight, into electricity.
- phraseologist — a person who treats of or is concerned with phraseology.
- 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
- pictorialness — the state of being pictorial
- piece of shit — despicable person
- pigeon breast — chicken breast.
- pilot biscuit — hardtack.
- pilot station — Also called pilotage. an onshore office or headquarters for pilots.
- pistol shrimp — any common shrimp of the family Alphaeidae, distinguished by the snapping sound made by its enlarged claw.
- piston engine — reciprocating engine.
- plagiostomous — plagiostome
- plagiotropism — plagiotropic tendency or growth.
- plain-clothes — Plain-clothes police officers wear ordinary clothes instead of a police uniform.
- plane spotter — a person who observes, photographs, and catalogues aircraft as a hobby
- planetologist — the branch of astronomy that deals with the physical features of the planets.
- plasmodesmata — any of many minute strands of cytoplasm that extend through plant cell walls and connect adjoining cells.
- plastic money — credit cards, used instead of cash
- plastoquinone — a quinone that occurs in the chloroplasts of plants and functions as an electron carrier during photosynthesis.
- platform shoe — a shoe with a platform.
- platiniferous — platinum-bearing
- platitudinous — characterized by or given to platitudes.
- platykurtosis — the state of being platykurtic.
- play politics — the science or art of political government.
- pleasure boat — recreational vessel
- plectopterous — of or relating to the order Plectoptera, containing mayflies
- plenitudinous — characterized or marked by plenitude.
- plethysmogram — the recording of a plethysmograph.
- pleurisy root — a North American milkweed, Asclepias tuberosa, whose root was used as a remedy for pleurisy.
- plumbosolvent — able to dissolve lead
- pneumatolysis — the process by which rocks are altered or minerals and ores are formed by the action of vapors given off by magma.
- pneumogastric — of or relating to the lungs and stomach.
- pocket chisel — any woodworking chisel having a blade of medium length.
- pocket-square — a handkerchief, often colored or figured, worn in the breast pocket of a suit or blazer as a fashion accessory.
- pococurantism — a careless or indifferent person.
- pococurantist — a person who demonstrates a tendency toward indifference