Skies
Upper atmosphere and skies are semantically related. In some cases you can use "Upper atmosphere" instead a noun "Skies".
Upper atmosphere
Skies and upper atmosphere are semantically related. You can use "Skies" instead a noun phrase "Upper atmosphere".
Mutual synonyms
Related pairs
Cite this Source
Upper atmosphere and Skies. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/skies/upper_atmosphere
Skies & Upper atmosphere. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/skies/upper_atmosphere>.
Upper atmosphere or Skies. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/skies/upper_atmosphere.
Google Ngram Viewer shows how "skies" and "upper atmosphere" have occurred on timeline