11-letter words starting with sp
- speculative — pertaining to, of the nature of, or characterized by speculation, contemplation, conjecture, or abstract reasoning: a speculative approach.
- speculatory — a place suitable for observation
- speech form — linguistic form.
- speechcraft — the art of rhetoric
- speechifier — to make a speech or speeches; harangue.
- speechmaker — a person who delivers speeches.
- speed brake — a flap on an aircraft wing used to decrease speed in flight in preparation for landing.
- speed check — a method of checking the speed at which vehicles are travelling, used by police
- speed chess — a form of chess in which each player's game is limited to a total stipulated time, usually half an hour; the first player to exceed the time limit loses
- speed demon — a person who travels or works at high speed.
- speed freak — an addict or habitual user of amphetamines, methamphetamines, or similar stimulating drugs.
- speed light — an electronic flash lamp.
- speed limit — the maximum speed at which a vehicle is legally permitted to travel, as within a specific area, on a certain road, or under given conditions.
- speed metal — a style of heavy-metal music typically played at extremely fast tempos.
- speed skate — racing skate.
- speedcoding — (language) A pseudocode interpreter for mathematics on IBM 701 and IBM 650 written by John Backus in 1953.
- speedometer — an instrument on an automobile or other vehicle for indicating the rate of travel in miles or kilometers per hour.
- spell check — to process (a document) with a spell checker; check the spelling of.
- spell-check — to process (a document) with a spell checker; check the spelling of.
- spellbinder — a person or thing that spellbinds, especially a powerful speaker who can captivate an audience.
- spendthrift — a person who spends possessions or money extravagantly or wastefully; prodigal.
- spent force — If you refer to someone who used to be powerful as a spent force, you mean that they no longer have any power or influence.
- sperm count — the number of spermatozoa in an amount of semen, used as an indication of a man's fertility
- sperm donor — a man who supplies sperm to be used in an artificial fertilization process
- sperm whale — a large, square-snouted whale, Physeter catodon, valued for its oil and spermaceti: now reduced in number and rare in some areas.
- spermaphyte — the placenta of a plant
- spermatheca — a small sac or cavity in female or hermaphroditic invertebrates used to store sperm for fertilizing eggs, as in the queen bee.
- 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.
- spermicidal — that kills sperm
- spermophile — any of various burrowing rodents of the squirrel family, especially of the genus Spermophilus (or Citellus), sometimes sufficiently numerous to do much damage to crops, as the ground squirrels and susliks.
- spermophyte — spermatophyte.
- spermotoxic — (of a substance) toxic to spermatozoa.
- spermotoxin — a substance toxic to spermatozoa.
- spessartite — Mineralogy. a yellow or red manganese-aluminum garnet, used as a semiprecious gem.
- sphaeridium — a round body found on sea urchins
- sphagnology — the study of sphagna
- spheroidize — to turn or be turned into spheroids
- spherometer — an instrument for measuring the curvature of spheres and curved surfaces.
- spheroplast — a Gram-negative bacterial cell with a cell wall that has been altered or is partly missing, resulting in a spherical shape.
- sphingosine — a basic unsaturated amino alcohol, C 1 8 H 3 3 (OH) 2 NH 2 , produced by the hydrolysis of sphingomyelin or gangliosides.
- sphinx moth — hawk moth.
- sphragistic — of or relating to seals or signet rings.
- sphygmogram — a tracing or diagram produced by a sphygmograph.
- sphygmology — the study and examination of the pulse
- spice route — an ancient trade route followed by merchants, importers and exporters trading in exotic spices such as cloves and cinnamon
- spiculation — formation into spicules.
- spider crab — any of various crabs of the family Majidae, having long, slender legs and a comparatively small, triangular body.
- spider hole — a foxhole with a camouflaged lid or cover in which a sniper hides