13-letter words containing p, e, a, s
- speed reading — a method of reading faster than normal, esp by skimming
- speed skating — ice skating as a form of racing, usually on an oval course and against other competitors or the clock.
- speed walking — power walking.
- speleotherapy — a form of treatment for asthma sufferers that takes place in clinics in disused mines, in which the air is free of pollen, dust mites, and the other irritants that provoke an allergic reaction; used to reduce the risk of heart disease
- spend a penny — to urinate
- spenta amesha — Amesha Spenta.
- spenta mainyu — the good and creative spirit that is the offspring of Ahura Mazda.
- sperm washing — a technique that separates sperm from the seminal fluid, used especially for isolating active sperm for artificial insemination.
- spermatangium — the organ that produces spermatia in red algae.
- spermatoblast — a reproductive cell
- spermatogenic — relating to the development of spermatozoa
- spermatophore — a capsule surrounding a mass of spermatozoa, produced by the male of various animal species and transferred to the female.
- spermatophyte — any of the Spermatophyta, a primary division or group of plants comprising those that bear seeds.
- spermatorrhea — abnormally frequent and involuntary nonorgasmic emission of semen.
- spermatotoxic — spermotoxic.
- spermatotoxin — spermotoxin.
- sperry univac — (company) One of the divisions of Sperry Corporation at the time that company merged with the Burroughs Corporation to form Unisys Corporation.
- spice islands — the Moluccas
- spindleshanks — spindlelegs.
- spine-bashing — to rest; loaf.
- spiral nebula — (formerly) a spiral galaxy.
- splanchnocele — a primitive embryonic body cavity
- splatter film — a film containing many scenes of violent and gruesome murders.
- splenial bone — a small bone in the lower jaw of some animals, such as reptiles and birds
- spoiler party — a third political party formed to draw votes away from one of the two major parties, thus spoiling its chance of winning an election.
- spokesmanship — the office or skilful use of the office of spokesman
- spontaneities — the exhibiting of actions, impulses, or behaviour that are stimulated by internal processes
- spontaneously — coming or resulting from a natural impulse or tendency; without effort or premeditation; natural and unconstrained; unplanned: a spontaneous burst of applause.
- sports jacket — a jacket, often of textured wool or colorful pattern, with a collar, lapels, long sleeves, and buttons in the front, cut somewhat fuller than the jacket of a business suit, worn with slacks for informal occasions.
- sportsmanlike — a man who engages in sports, especially in some open-air sport, as hunting, fishing, racing, etc.
- spotted adder — milk snake.
- spotted crake — a Eurasian rail, Porzana porzana, of swamps and marshes, having a buff speckled plumage and dark brown wings
- spotted hyena — a long-legged carnivorous doglike mammal native to Africa and S Asia (Crocuta crocuta)
- spotter plane — an aircraft used in observing enemy movements or the accuracy of fire on a target
- spread option — spread (def 25b).
- spreadability — capable of being spread; easily spread: a soft, spreadable cheese.
- spreader beam — a crosspiece for spacing the chains or cables hanging from the boom of a crane.
- spring a leak — to develop a leak
- spring beauty — any American spring plant belonging to the genus Claytonia, of the purslane family, especially C. virginica, having an elongated cluster of white flowers tinged with pink.
- spring valley — a city in SW California, near San Diego.
- spring-loaded — (of a machine part) kept normally in a certain position by a spring: a spring-loaded safety valve.
- springboarded — a flexible board, projecting over water, from which divers leap or spring.
- spruce sawfly — any of several sawflies of the family Diprionidae, especially Diprion hercyniae (European spruce sawfly) the larvae of which feed on the foliage of spruce.
- spurge family — the large plant family Euphorbiaceae, characterized by herbaceous plants, shrubs, and trees having milky juice, simple alternate leaves or no leaves, usually petalless flowers often with showy bracts, and capsular fruit, and including cassava, croton, crown-of-thorns, poinsettia, snow-on-the-mountain, spurge, and the plants that produce castor oil, rubber, and tung oil.
- spurge laurel — a European thymelaeaceous evergreen shrub, Daphne laureola, with glossy leaves and small green flowers
- spy satellite — an orbiting satellite used to carry out surveillance of an enemy country or military formations from space
- spy wednesday — (in Ireland) the Wednesday before Easter, named for Judas' becoming a spy for the Sanhedrin
- spying charge — an accusation of having taken part in espionage
- square splice — a scarf joint between two pieces, having the form of a half-lap joint with a thicker and a thinner section for each piece, the thicker one being at the end: used to resist tension.
- squared paper — graph paper with a pattern of squares formed by lines crossing at right angles.