11-letter words containing o, p, s, a
- spatterwork — a method of decorating whereby ink or another fluid is spattered over a medium
- specialogue — a mail-order catalogue aimed at a specific group of customers
- spectrogram — a representation or photograph of a spectrum.
- speculation — the contemplation or consideration of some subject: to engage in speculation on humanity's ultimate destiny.
- speculatory — a place suitable for observation
- spermatoxic — (of a substance) toxic to spermatozoa.
- spermatoxin — a substance toxic to spermatozoa.
- spermatozoa — one of the minute, usually actively motile gametes in semen, which serve to fertilize the ovum; a mature male reproductive cell.
- sphagnology — the study of sphagna
- spheroplast — a Gram-negative bacterial cell with a cell wall that has been altered or is partly missing, resulting in a spherical shape.
- sphygmogram — a tracing or diagram produced by a sphygmograph.
- spiculation — formation into spicules.
- spinal cord — the cord of nerve tissue extending through the spinal canal of the spinal column.
- spiraliform — having or resembling spiral lines
- spirochaete — any of various spiral-shaped motile bacteria of the family Spirochaetaceae, certain species, as Treponema, Leptospira, and Borrelia, being pathogenic to humans and other animals, and other species being free-living, saprophytic, or parasitic.
- spirography — the study of breathing using a spirograph
- spiroplasma — any of numerous bacteria of the genus Spiroplasma that have no cell walls or flagella and are parasitic in plants and arthropods.
- splashboard — a board, guard, or screen to protect from splashing, as a dashboard of a vehicle or a guard placed over a wheel to intercept water, dirt, etc.
- splashproof — resistant to splashing
- spodomantic — relating to spodomancy
- spokeswoman — a woman who speaks for another person or for a group.
- sponge bath — a bath in which the bather is cleaned by a wet sponge or washcloth dipped in water, without getting into a tub of water.
- sponge cake — a light, sweet cake made with a comparatively large proportion of eggs but no shortening.
- spontaneity — the state, quality, or fact of being spontaneous.
- spontaneous — coming or resulting from a natural impulse or tendency; without effort or premeditation; natural and unconstrained; unplanned: a spontaneous burst of applause.
- spoon bread — Chiefly South Midland and Southern U.S. a baked dish made with cornmeal, milk, eggs, and shortening, served as an accompaniment to meat.
- sporadicity — (of similar things or occurrences) appearing or happening at irregular intervals in time; occasional: sporadic renewals of enthusiasm.
- sports hall — venue for physical activities
- sports page — newspaper page carrying sports results
- sportswoman — a woman who engages in sports.
- sporulation — to produce spores.
- sporulative — involving or relating to sporulation
- spot market — a market in which commodities, as grain, gold, or crude oil, are dealt in for cash and immediate delivery (distinguished from futures market).
- spotted ray — any of various species of ray with irregular markings on the back
- springboard — a flexible board, projecting over water, from which divers leap or spring.
- stand up to — (of a person) to be in an upright position on the feet.
- stasimorphy — structural modification by arrested development
- stauroscope — an optical instrument for studying the crystal structure of minerals under polarized light
- steam point — the temperature at which water vapor condenses at a pressure of one atmosphere, represented by 100°C and 212°F.
- stearoptene — the oxygenated solid part of an essential oil (opposed to eleoptene).
- steatopygia — extreme accumulation of fat on and about the buttocks, especially of women.
- steatopygic — extreme accumulation of fat on and about the buttocks, especially of women.
- stenography — the art of writing in shorthand.
- stephanotis — any vine belonging to the genus Stephanotis, of the milkweed family, having fragrant, waxy, white flowers and leathery leaves.
- stereograph — a single or double picture for a stereoscope.
- stipulation — a condition, demand, or promise in an agreement or contract.
- stone plant — living stones.
- stoop labor — the physical labor associated with the cultivation or picking of crops in farm fields, especially as performed by poorly paid, unskilled workers.
- stop-and-go — characterized by periodically enforced stops, as caused by heavy traffic or traffic signals: stop-and-go traffic.
- strandloper — a member of an extinct tribe of Khoikhoi or Bushmen who lived on seafood gathered on the beaches of southern Africa