n. 1. the atmosphere and outer space considered together or as a whole. [ WordNet 1.5 ]

2. the sector of industry that designs and builds aircraft, rockets, missiles, and devices or vehicles intended to operate in outer space. [ WordNet 1.5 ]

a. of or pertaining to aerospace in either sense. [ PJC ]

n. 1. the atmosphere above a nation and deemed to be under its jurisdiction. [ WordNet 1.5 ]

. (Billiards) In the balk-line game, any of eight spaces, 7 inches by 31/2, lying along a cushion and bisected transversely by a balk line. Object balls in an anchor space are treated as in balk. [ Webster 1913 Suppl. ]

v. i. In typing text, to press the backspace key so as to reposition the carriage or cursor on the previous space. [ PJC ]

n. 1. The key on a typewriter or other keyboard used for back spacing.
Syn. -- backspace key. [ WordNet 1.5 ]

[ After Sir William Crookes, English chemist, who first described it. ] (Physics) The dark space within the negative-pole glow at the cathode of a vacuum tube, observed only when the pressure is low enough to give a striated discharge; -- called also Crookes layer. [ Webster 1913 Suppl. ]

v. i. [ Pref. dis- asunder, different ways, to and fro + pace. ] To roam. [ Obs. ] [ 1913 Webster ]

In this fair plot dispacing to and fro. Spenser. [ 1913 Webster ]

n. Space. [ Obs. ] Chaucer. [ 1913 Webster ]

n. A large astromical optical telescope placed into orbit around the earth, from which, in the absence of absorption and distortion by the earth's atmosphere, clear high-resolution images of astronomical objects can be obtained in the visible, infrared, and ultraviolet wavelengths. The telescope was launched into orbit on April 24, 1990. Since then the telescope has taken thousands of images, many of them unique, recording never before seen astronomical phenomena. Service missions were performed in 1993 and 1997, during which astronauts upgraded or replaced equipment on the telescope. Link to Hubble Telescope Information. [ PJC ]

n. [ Pref. hyper- + space. ] (Geom.) A mathematical space having more than three dimensions. It is a mathematical construct and is not intended to represent the structure of the common physical space in which matter exists. [ 1913 Webster +PJC ]

n. [ L. interspatium. See Inter-, and Space. ] Intervening space. Bp. Hacket. [ 1913 Webster ]

n. [ OE. space, F. espace, from L. spatium space; cf. Gr. spa^n to draw, to tear; perh. akin to E. span. Cf. Expatiate. ] 1. Extension, considered independently of anything which it may contain; that which makes extended objects conceivable and possible. [ 1913 Webster ]

Pure space is capable neither of resistance nor motion. Locke. [ 1913 Webster ]

2. Place, having more or less extension; room. [ 1913 Webster ]

They gave him chase, and hunted him as hare;
Long had he no space to dwell [ in ]. R. of Brunne. [ 1913 Webster ]

While I have time and space. Chaucer. [ 1913 Webster ]

3. A quantity or portion of extension; distance from one thing to another; an interval between any two or more objects; as, the space between two stars or two hills; the sound was heard for the space of a mile. [ 1913 Webster ]

Put a space betwixt drove and drove. Gen. xxxii. 16. [ 1913 Webster ]

4. Quantity of time; an interval between two points of time; duration; time. “Grace God gave him here, this land to keep long space.” R. of brunne. [ 1913 Webster ]

Nine times the space that measures day and night. Milton. [ 1913 Webster ]

God may defer his judgments for a time, and give a people a longer space of repentance. Tillotson. [ 1913 Webster ]

5. A short time; a while. [ R. ] “To stay your deadly strife a space.” Spenser. [ 1913 Webster ]

6. Walk; track; path; course. [ Obs. ] [ 1913 Webster ]

This ilke [ same ] monk let old things pace,
And held after the new world the space. Chaucer. [ 1913 Webster ]

7. (Print.) (a) A small piece of metal cast lower than a face type, so as not to receive the ink in printing, -- used to separate words or letters. (b) The distance or interval between words or letters in the lines, or between lines, as in books, on a computer screen, etc. [ 1913 Webster ]

☞ Spaces are of different thicknesses to enable the compositor to arrange the words at equal distances from each other in the same line. [ 1913 Webster ]

8. (Mus.) One of the intervals, or open places, between the lines of the staff. [ 1913 Webster ]

9. that portion of the universe outside the earth or its atmosphere; -- called also outer space. [ PJC ]

Absolute space,
Euclidian space, etc. See under Absolute, Euclidian, etc. --
deep space, the part of outer space which is beyond the limits of the solar system. --
Space line (Print.), a thin piece of metal used by printers to open the lines of type to a regular distance from each other, and for other purposes; a lead. Hansard. --
Space rule (Print.), a fine, thin, short metal rule of the same height as the type, used in printing short lines in tabular matter. [ 1913 Webster ]

v. i. [ Cf. OF. espacier, L. spatiari. See Space, n. ] To walk; to rove; to roam. [ Obs. ] [ 1913 Webster ]

And loved in forests wild to space. Spenser. [ 1913 Webster ]

v. t. [ imp. & p. p. Spaced p. pr. & vb. n. Spacong ] [ Cf. F. espacer. See Space, n. ] (Print.) To arrange or adjust the spaces in or between; as, to space words, lines, or letters. [ 1913 Webster ]

n. the time during which humans engaged in space exploration; -- generally considered as beginning on October 4, 1957 when the Soviet Union placed the first artificial satellite into orbit around the earth. [ PJC ]

n. a person who appears disconnected from reality, or living in his own world; -- sometimes used of people who are under the influence of mind-altering drugs. [ derogatory ] [ PJC ]

n. a vehicle capable of travelling in or into outer space; at present, all such vehicles are powered by rocket engine. [ PJC ]

n. the process or event in which vehicles travel into outer space. [ PJC ]

a. Wide; extensive. Sandys. [ 1913 Webster ]

n. a portable heating device used for warming the air of a single room; -- it may be electrical or use a combustible fuel. [ PJC ]

{ or }. (Mach., Computers) A bar or key, in a typewriter, typesetting machine, or other keyboard (as a computer keyboard), used to insert a space between letters. [ Webster 1913 Suppl. +PJC ]

a. Without space. Coleridge. [ 1913 Webster ]

n. 1. an astronaut. [ PJC ]

2. an intelligent creature from outer space; an extraterrestrial; -- a fictional or hypothetical being, never actually observed. [ PJC ]

n. [ by analogy with airport. ] a facility where vehicles are launched into space. [ PJC ]

n. an unmanned rocket carrying instruments to explore objects or conditions in outer space; -- used mostly for vehicles travelling beyond the earth's gravitational field, rather than in orbital or suborbital flight. [ PJC ]

n. a reusable vehicle that can carry people or objects into orbit around the earth and return to be used again for subsequent trips; -- distinguished from rockets that are used only once. The present (1997) American space shuttle is a manned vehicle, having an external fuel tank that is expendable and not re-used. [ PJC ]

n. a group of symptoms, prominently nausea, but sometimes including lethargy, headache, and sweating, occuring under the weightless conditions of space flight. [ RHUD ] [ PJC ]

n. a manned artificial satellite orbiting the earth designed for extended occupation and use by multiple crews in succession. [ PJC ]

n. a protective suit covering the whole body, completely airtight and designed to withstand internal pressure, worn by astronauts to protect them from the vacuum and other hazards of outer space. It typically contains an air supply and other life-support equipment to allow functioning independent of any other equipment for a period of time while in space. [ PJC ]

n. the four-dimensional coordinate system in which all physical objects of the known universe are located, and in which all physical events occur; it consists of three spatial dimensions and one time dimension; -- also called the space-time continuum. [ PJC ]

n. the process of travelling in or into outer space. [ PJC ]

n. any activity by a human outside of the protective environment of a spacecraft while it is in outer space, requiring a space suit to protect the person from the vacuum and other hazards of space. [ PJC ]