13-letter words starting with 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.
- speedcoding 3 — (language) [Listed in CACM 2(5):16, May 1959].
- speeding fine — a fine for breaking the speed limit while driving a vehicle
- 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
- spell checker — a computer program for checking the spelling of words in an electronic document.
- spell-checker — A spell-checker is a special program on a computer which you can use to check whether something you have written contains any spelling mistakes.
- spelling book — an elementary textbook or manual to teach spelling
- spelling-book — a person who spells words.
- 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.
- sphagnicolous — growing in moss
- sphagnologist — a person who studies sphagna
- sphagnum moss — Botany
- sphenoid bone — the large butterfly-shaped compound bone at the base of the skull, containing a protective depression for the pituitary gland
- spheristerion — an area designated for ballplay
- spherocytosis — the condition of having spherocytes
- spheroidicity — a spheroidal state or form.
- sphingomyelin — any of the class of phospholipids occurring chiefly in the brain and spinal cord, composed of phosphoric acid, choline, sphingosine, and a fatty acid.
- spice islands — the Moluccas
- spider flower — cleome
- spider monkey — any of several tropical American monkeys of the genus Ateles, having a slender body, long, slender limbs, and a long, prehensile tail: some are endangered.
- spider orchid — any of several European orchids of the genus Ophrys, esp O. sphegodes, having a flower with yellow, green, or pink sepals and a broad brown velvety lip
- spinal column — the series of vertebrae in a vertebrate animal forming the axis of the skeleton and protecting the spinal cord; spine; backbone.
- spindleshanks — spindlelegs.
- spine-bashing — to rest; loaf.
- spine-chiller — a book, film, etc, that arouses terror
- spinning mule — mule1 (def 7).
- spinning reel — a fishing reel mounted on a spinning rod, having a stationary spool on the side of which is a revolving metal arm that catches the line and winds it onto the spool as a handle is turned, the metal arm being disengaged during casting so the line spirals freely off the spool, carried by the cast lure.
- spinning ring — ring1 (def 20).
- spinuliferous — relating to a spine or spines
- spiny dogfish — any of several dogfish sharks of the genus Squalus, having a spine in front of each of the two dorsal fins, especially S. acanthias, inhabiting Atlantic coastal waters.
- 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.
- spiral casing — a spiral passage for directing the water from a penstock around a water turbine and into the rotor.
- spiral galaxy — a galaxy having a spiral structure.
- spiral nebula — (formerly) a spiral galaxy.
- spiral spring — a form of spring consisting of a wire coiled in a helix.
- spiritousness — the state of being spiritous