Synset

a relatively thin sheetlike expanse or region lying over or under another
<noun.location> freq. cnt.: 1 freq. cnt.: 1

lexical pointers

derivationally related form

semantic pointers

hypernym

hyponym

stratum asthenosphere chromosphere crust, Earth's crust exosphere hydrosphere lithosphere, geosphere lower mantle mantle mesosphere ozone layer, ozonosphere stratosphere surface, Earth's surface thermosphere tropopause troposphere upper mantle cell wall snow