heaven = "the sky and its contents"

1] the vaulted expanse of the sky with all things visible in it
   1a] the universe, the world
   1b] the aerial heavens or sky, the region where the clouds and the tempests gather, and where thunder and lightning are produced
   1c] the sidereal or starry heavens
2] the region above the sidereal heavens, the seat of order of things eternal and consummately perfect where God dwells and other heavenly beings
derivation: perhaps from the same as (3735) (through the idea of elevation); the sky
http://bible1.crosswalk.com/Lexicons/Greek/grk.cgi?number=3772&version=kjv

(3735)
1] a mountain
derivation: probably from an obsolete oro (to rise or "rear", perhaps akin to (142), cf (3733))
http://bible1.crosswalk.com/Lexicons/Greek/grk.cgi?number=3735&version=kjv

(142)
1] to raise up, elevate, lift up
   1a] to raise from the ground, take up: stones
   1b] to raise upwards, elevate, lift up: the hand
   1c] to draw up: a fish
2] to take upon one's self and carry what has been raised up, to bear
3] to bear away what has been raised, carry off
   3a] to move from its place
   3b] to take off or away what is attached to anything
   3c] to remove
   3d] to carry off, carry away with one
   3e] to appropriate what is taken
   3f] to take away from another what is his or what is committed to him, to take by force
   3g] to take and apply to any use
   3h] to take from among the living, either by a natural death, or by violence
   3i] cause to cease
derivation: a primary root
http://bible1.crosswalk.com/Lexicons/Greek/grk.cgi?number=142&version=kjv

(3733)
1] a bird
2] a cock, a hen
derivation: probably from a prolonged form of the base of (3735)
http://bible1.crosswalk.com/Lexicons/Greek/grk.cgi?number=3733&version=kjv

Additional information:
The transliteration of 3772 is Ouranos.

"Uranus, also known as Ouranos, was the embodiment of the sky or heavens, and known as the god of the sky."
http://www.pantheon.org/articles/u/uranus.html

"In Greek mythology, Ouranos represented the sky or heaven."
http://library.thinkquest.org/17709/people/ouranos.htm

"In the Old Testament, the English word ‘heaven’ is translated almost exclusively from two different words. The Hebrew word 'shamayim' which is defined as ‘the sky', the place where the clouds and stars are, or 'shamayin', the Aramaic word of the same definition. In the Old Testament, the English word ‘heaven’ is translated from other words only five times in the following verses:
Psalms 68:4 it is translated from the Hebrew, arabah, ‘ the desert ‘
Psalms 77:18 the word is galgal, Hebrew for ‘ wheel or whirlwind '
Psalms 89:6 & 37 where it is translated from the word shachaq, Hebrew for ‘ powder or thin vapor ’.
Isaiah 5:30 the English word 'heaven' is translated from ariyph, Hebrew for ‘ the sky ‘

The New Testament defines ‘heaven’ from the Greek word ‘ouranos’ meaning ‘the sky’ in all but 7 instances :
Philippians 2:10 Greek epouranos, ‘ above the sky, celestial ‘
Revelation 8:13, 14:6, 19:1, 11, 14, and 17 from the Greek word mesouranema, meaning mid-sky."
http://www.bibleufo.com/gospel3.htm