spac-, spat-

1. The earth's atmosphere and outer space.
2. The air surrounding the earth and the space beyond it.
3. Relating to the design, manufacture, and flight of vehicles or missiles that fly in and beyond the earth's atmosphere.

The craft of engineering pertaining to the design and construction of aircraft and space vehicles and of power units, and dealing with the special problems of flight in both the earth's atmosphere and space; such as, in the flight of air vehicles and the launching, guidance, and control of missiles, earth satellites, and space vehicles and probes.

1. The notional realm in which electronic information exists or is exchanged.
2. The imagined world of virtual reality.
3. A computer network consisting of a worldwide network of computer networks that use the TCP/IP network protocols to facilitate data transmission and exchange
4. Not a real location but rather the “world” created by computers and specifically the internet.

In this virtual space, people can do many of the things they do in “normal” physical space; that is, interact with other people, shop, read the news, etc. Computer games often create a specialized cyberspace the user enters while playing the game and all the action of the game occurs in that world.

The regions beneath the ocean's surface, especially when considered as an area to be studied.

Trigeminal cave, the cleft in the meningeal layer of dura of the middle cranial fossa near the tip of the petrous part of the temporal bone; it encloses the roots of the trigeminal nerve and the trigeminal ganglion.

Offering or containing much space or room; extensive.