[ suhb-strat-uh-sfeer ]
/ sʌbˈstræt əˌsfɪər /

noun (not used technically)

the upper troposphere.

Origin of substratosphere

First recorded in 1915–20; sub- + stratosphere

Related forms

sub·strat·o·spher·ic [suhb-strat-uh-sfer-ik, -sfeer-] /ˌsʌb stræt əˈsfɛr ɪk, -ˈsfɪər-/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for substratosphere

  • It hadn't looked so big from the substratosphere in Alexander's ship, but down here close to the ground it was enormous.

    The Lani People|J. F. Bone