tro·po·sphere 
(tr
p
-sfîr
, tr
p-) See the pronunciation key
NOUN:
OTHER FORMS:
tropo·spheric(Adjective)
(tr
p-sfîr, trp-) See the pronunciation key NOUN:
- The lowest region of the atmosphere between the earth's surface and the tropopause, characterized by decreasing temperature with increasing altitude.
OTHER FORMS:
tro
po·spheric(Adjective)
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