Define shell ,subshell and orbit. Questions › Define shell ,subshell and orbit. 0 Vote Up Vote Down Akhil Giri asked 4 years ago Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on Google+ (Opens in new window)Click to share on Reddit (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on WhatsApp (Opens in new window)Share on Skype (Opens in new window)Click to share on LinkedIn (Opens in new window)