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space shuttle a space vehicle designed to transport astronauts and their equipment between the earth and an orbiting space station, or to carry out orbital missions.
space station a large artificial satellite in long-term orbit, designed to be used as a military outpost, scientific research laboratory, or site for the assembly and launching of other spacecraft.
spacesuit a pressurized protective suit enabling the wearer to survive in outer space.
space-time the four-dimensional continuum consisting of three dimensions of space and one of time, within which any object or event can be located.
spacewalk the action or an instance of an astronaut's moving about outside a spacecraft in outer space. [2 definitions]
spacewoman a woman who travels in space, outside the earth's atmosphere; astronaut. [2 definitions]
spacey disoriented because of using a drug; spaced out. [2 definitions]
spacial variant of spatial.
spacing arrangement of objects and spaces within a given area.
spacious having ample space. [3 definitions]
Spackle trademark for a powder that forms a paste when mixed with water, used to smooth out wall cracks, holes, and the like before papering, painting, or other finishing work. [2 definitions]
spade1 a shovel-like digging tool with a long handle and a sturdy flat blade that can be pushed into the ground with a foot. [3 definitions]
spade2 a black figure shaped like a pointed leaf with a short stem, used on playing cards. [4 definitions]
spadework preparatory work for a project or activity. [2 definitions]
spadix a thick, fleshy spike that carries very tiny flowers, usu. surrounded by a sheathlike spathe, as in the calla.
spaghetti a form of pasta made in long thin strings, usu. served with a meat, tomato, or other sauce. [2 definitions]
spaghetti squash a large roundish squash, the flesh of which is a mass of long thin strands.
spaghetti strap a thin round shoulder strap on a woman's garment such as a party dress.
Spain a southern European country on the Iberian Peninsula between Portugal and the Mediterranean Sea.
spallation a nuclear reaction in which bombardment of atomic nuclei with a high-energy projectiles results in the ejection of subatomic particles. [2 definitions]
Spam trademark for an inexpensive meat prepared from pork pieces and seasonings, usu. canned.