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Space-time diagram
A space-time diagram is one on which time is on a vertical ...
Spamming
Spamming can be defined as the abusive use of an electronic ...
Span-wise ice accretion
A span-wise ice accretion is a long narrow strip of ice floe ...
Spandrel
In joinery and masonry, the corner piece is the stone ...
Spar
Spar is an old mineralogical term denoting various ...
Spar
On the wing of a plane, the spar is the beam that extends ...
Spathe
Spathe is a botanical term. The spathe is the membranous ...
Spawn
The term spawn covers several things related to fish and ...
Spawning ground
A spawning ground is a place where species such as fish, ...
Special conservation zone
The European Flora Fauna Habitat directive which supplements ...
Special protection area
Special protection areas (SPA) are areas included in the ...
Special relativity
The theory of special relativity was enunciated by Einstein ...
Specialised link
A specialised link is an exclusive direct and permanent link ...
Speciation
Speciation is the evolutionary process leading to the ...
Species
A species is a group of living beings that can reproduce ...
Specific electricity
Specific electricity is the electricity used for services ...
Specific impulse
Specific impulse is the ratio of the thrust delivered by a ...
Speckled wood
The speckled wood (Linnaeus, 1758) - Pararge aegeria Order: ...
Spectacled bear
Spectacled bear (Cuvier 1825) - Tremarctos ornatus Order: ...
Spectral classification
Spectral classification is a system for classifying stars. ...
Spectral colour
A spectral colour is a colour originating from the ...
Spectral line
A spectral line is the signature of atoms of the various ...
Spectroheliograph
A spectroheliograph is a high resolution spectroscope used ...
Spectrometer
A spectrometer is an instrument for measuring the wavelength ...
Spectrometry
Physics Spectrometry refers to the various methods of ...
Spectrum
Physics A spectrum is a plot of the contribution (e.g. in ...
Speleogenesis
Speleogenesis is the study of the formation of natural ...
Speleology
Speleology is the scientific or recreational study of a ...
Sperm whale
Sperm whale (Linnaeus 1758) - Physeter macrocephalus Order: ...
Spermaceti
Spermaceti is a fatty white substance composed of fats and ...
Spermatozoon
A spermatozoon is a male gamete, developed by the ...
Spermicide
Spermicides are substances with local contraceptive action. ...
Spermogenesis
Spermogenesis is the last phase of spermatogenesis during ...
Spermophilus
Members of theSpermophilus genus are considered to be ground ...
Spherical aberration
When light rays passing through the edges of a lens do not ...
Spherolite
A spherolite is a sphere-shaped stone
Spica
The Spica star is the main star in the constellation of ...
SPICAV
Spectroscopy for Investigation of Characteristics of the ...
Spicules
Spicules are the skeletal particles in a sponge. They can be ...
Spin
The spin of a particle is its intrinsic angular momentum. ...
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Nerve root
Retified wood
Protocol
Wakefield
MP3
Blennorragia
Wavenumber
Eversion
Pussy willow
Frenulum
Dolomitic limestone
Jilin petrochemical plant disaster
Brightening
Salivary gland
Shoemaker-Levy 9
Reprotoxic
Cellular respiration
American Bullfrog
One-time pad
Walking bus
Data rate
Electromagnetic field
Phyllite
Group
Subduction
Quantum dot
Bisphenol A
Malware
Mascarene petrel
Borborygmus
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