13-letter words containing p, e, r, s, t, o
- root pressure — osmotic pressure within the cells of a root system that causes sap to rise through a plant stem to the leaves.
- sachet-powder — a small bag, case, or pad containing perfuming powder or the like, placed among handkerchiefs, lingerie, etc., to impart a pleasant scent.
- school report — written assessment of school pupil
- scleroprotein — protein that is fibrous and insoluble in water, serving a protective or supportive function in the body.
- sclerotherapy — Medicine/Medical. a treatment for varicose veins in which blood flow is diverted and the veins collapsed by injection of a hardening solution, also used cosmetically in spider veins to eliminate discoloration.
- sea transport — transport by ship over the sea
- secret police — a police force that functions as the enforcement arm of a government's political policies and whose activities, which often include surveillance, intimidation, and physical violence as a means of suppressing dissent, are usually concealed from the public.
- secret weapon — Someone's secret weapon is a thing or person which they believe will help them achieve something and which other people do not know about.
- selenotropism — growth in response to moonlight.
- self-portrait — a portrait of oneself done by oneself.
- semi-tropical — Semi-tropical places have warm, wet air.
- septentrional — northern; boreal
- septentriones — the seven stars of the Plough, the Great Bear
- serendipitous — come upon or found by accident; fortuitous: serendipitous scientific discoveries.
- sharp-tongued — characterized by or given to harshness, bitterness, or sarcasm in speech.
- ship's stores — a retail store aboard a navy ship that sells toiletries, cigarettes, etc., to the ship's personnel.
- ship-to-shore — operating between a ship and the shore: a ship-to-shore radio.
- shock therapy — (not in technical use) any of various therapies, as insulin shock therapy or electroconvulsive therapy, that induce convulsions or unconsciousness, used for symptomatic relief in certain mental disorders.
- sleep through — If you sleep through something, it does not wake you up.
- slow puncture — a small hole in a tyre, from which the air escapes very slowly, so that at first it is not obvious that there is any problem with the tyre
- southern alps — a mountain range in New Zealand, on South Island: the highest range in Australasia. Highest peak: Mount Cook (also known as Aoraki or Aorangi), 3754 m (12 316 ft)
- space tourism — travel into space for recreational purposes
- spear-thrower — a flexible device for launching a spear, usually a short cord wound around the spear so that when thrown the weapon will rotate in the air.
- spectatorship — the state of being a spectator
- spectrography — a spectroscope for photographing or producing a representation of a spectrum.
- spectroscopic — an optical device for producing and observing a spectrum of light or radiation from any source, consisting essentially of a slit through which the radiation passes, a collimating lens, and an Amici prism.
- 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
- 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.
- spheristerion — an area designated for ballplay
- spherocytosis — the condition of having spherocytes
- spheroidicity — a spheroidal state or form.
- spiny lobster — any of several edible crustaceans of the family Palinuridae, differing from the true lobsters in having a spiny shell and lacking the large pincers.
- spiritousness — the state of being spiritous
- spirochetosis — a disease caused by infection with a spirochete.
- 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.
- sports centre — a place where people take part in sports
- 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.
- sports writer — A sports writer is a journalist who writes about sport.
- sportsmanlike — a man who engages in sports, especially in some open-air sport, as hunting, fishing, racing, etc.
- spot reducing — the usually futile effort to exercise one part of the body, as the thighs, in hopes of reducing the amount of fat stored in that area.
- 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 fever — any of several fevers characterized by spots on the skin, especially as in cerebrospinal meningitis or typhus fever.
- spotter plane — an aircraft used in observing enemy movements or the accuracy of fire on a target