intershell /ˈɪntɚˌʃɛl/adjective 1noun 1forms 1 adjective1 •Between shells."This cluster is unusual in that its outermost shell has fewer atoms than the underlying shell, and CO ligands bridge intershell metal atoms." — 2007 noun1 •The layer between two stellar shells, particularly between the hydrogen and helium shells."In this inner portion of the intershell 13C and N are totally absent, but there is some 16O." — 1981 formsintershells
