Space

• interplanetary space

  The part of outer space within the solar system.

• interstellar space

  The space between stars.

• intergalactic space

  The space between galaxies; "the Milky Way travels through intergalactic sp...

• deep space

  Any region in space outside the solar system.

Ionosphere

• ionosphere

  The outer region of the Earth's atmosphere; contains a high concentration of free el...

• D-layer

  The lowest region of the ionosphere (35 to 50 miles up) that reflects low-frequency radio...

• Appleton layer

  The highest region of the ionosphere (from 90 to 600 miles up) which contains the...

• Heaviside layer

  A region of the ionosphere (from 50 to 90 miles up) that reflects radio waves of...

Greece

• Achaea

  A region of ancient Greece on the north coast of the Peloponnese.

• Doris

  A small region of ancient Greece where the Doric dialect was spoken.

Zodiac

• zodiac

  A belt-shaped region in the heavens on either side to the ecliptic; divided into 12 constellations...

• house

  (astrology) one of 12 equal areas into which the zodiac is divided.

Also contains

• county

  (United Kingdom) a region created by territorial division for the purpose of local government;...

• layer

  A relatively thin sheetlike expanse or region lying over or under another.

• zone

  An area or region distinguished from adjacent parts by a distinctive feature or characteri...

• side

  A place within a region identified relative to a center or reference location; "they always...

• top

  The upper part of anything; "the mower cuts off the tops of the grass"; "the title should be...

• belt

  An elongated region where a specific condition or characteristic is found; "a belt of high...

• extremity

  The outermost or farthest region or point.

• air

  The mass of air surrounding the Earth; "there was great heat as the comet entered the atmosphere";...

• inside

  The region that is inside of something.

• bottom

  The lowest part of anything; "they started at the bottom of the hill".

• depth

  (usually plural) the deepest and most remote part; "from the depths of darkest Africa"; "signals...

• heliosphere

  The region inside the heliopause containing the sun and solar system.

• aerospace

  The atmosphere and outer space considered as a whole.

• outside

  The region that is outside of something.

• biosphere

  The regions of the surface and atmosphere of the Earth (or other planet) where living...

• Kuiper belt

  A disk-shaped region of minor planets outside the orbit of Neptune.

• Eden

  Any place of complete bliss and delight and peace.

• Transylvania

  A historical plateau region in northwestern Romania that is separated from the rest...

• black hole

  A region of space resulting from the collapse of a star; extremely high gravitational...

• Papua

  The southeastern part of Papua New Guinea.

• mare

  A dark region of considerable extent on the surface of the moon.

• Cynoscephalae

  The fields in Thessaly where in 197 BC the Romans defeated the Macedonians.

• Witwatersrand

  A rocky region in the southern Transvaal in northeastern South Africa; contains rich...

• air

  The region above the ground; "her hand stopped in mid air"; "he threw the ball into the air...

• vacuum

  A region that is devoid of matter.

• Sind

  A region of southeastern Pakistan.

• distance

  A distant region; "I could see it in the distance".

• hell

  Any place of pain and turmoil; "the hell of battle"; "the inferno of the engine room"; "when...

• radius

  A circular region whose area is indicated by the length of its radius; "they located it within...