strat·o·sphere 
(strătə-sfîr′)
(strătə-sfîr′)n.
1. The region of the atmosphere above the troposphere and below the mesosphere.
2. An extremely high or the highest point or degree on a ranked scale: business expenses in the stratosphere.
[French stratosphère : Latin strātus, a spreading out; see STRATUS + -sphère, sphere (from Old French espere; see SPHERE).]
- Indo-European root: kwetwer-
- Indo-European root: kwo-
- Indo-European root: kwon-
- Indo-European root: kwrep-
- Indo-European root: kwr̥mi-
- Indo-European root: kwēt-
- Indo-European root: kā-
- Indo-European root: kō-
- Indo-European root: laks-
- Indo-European root: las-
- Indo-European root: lau-
- Indo-European root: leb-
- Indo-European root: leg-
- Indo-European root: legh-
- Indo-European root: legwh-
- Indo-European root: lei-
- Indo-European root: leid-
- Indo-European root: leig-
- Indo-European root: leigh-
- Indo-European root: leikw-
- Indo-European root: leip-
- Indo-European root: leis-
- Indo-European root: leis-
- Indo-European root: leit-
- Indo-European root: lendh-