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Spartivento, Cape (geographical area, Italy)
spasm (condition)
spastic paralysis (disease)
spavin (disease)
spear (weapon)
Special Drawing Rights (in economics)
special effects (in film)
special prosecutor (law, history, United States)
species (in taxonomy)
specific gravity (in physics)
specific heat (in thermodynamics)
Spectator (of England)
spectral class (in astronomy)
spectroheliograph (mechanical device)
spectrophotometer (instrument)
spectroscope (instrument)
spectrum (in optics)
speculation (in business)
speech defect (condition)
speech, freedom of (Politics)
speed (in physics)
speedometer (instrument)
Speedway (city, Indiana)
speleology (branch of geography, geology)
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Spencer (city, Iowa)
Spencer Gulf (body of water, Australia)
sperm (in biology)
sperm oil (material)
sperm whale (mammal, cetacean)
spermaceti (material)
Spey (river, Scotland)
Speyer (city, Germany)
Spezia, La (city, Italy)
sphagnum (plant)
sphalerite (mineral)
sphere (in geometry)
sphere of influence (in government)
sphinx (mythology, art, ancient Egypt/ancient Greece)
Spica (star)
spider (arachnid)
spiderwort (plant, herb)
spikenard (plant)
spinach (plant, vegetable)
spinal column (in anatomy)
spinal cord (in anatomy)
spinal puncture (technique)
spinel (in chemistry)
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