atom.orum N 2 1 GEN P F
atomus, atomi N (2nd) F [XXXCO]
atom.orum N 2 6 GEN P F
atomos, atomi N F [XXXCO]
atom, ultimate component of matter, particle incapable of being divided;
atom.orum ADJ 1 1 GEN P M POS
atom.orum ADJ 1 1 GEN P N POS
atomus, atoma, atomum ADJ [XSXNO] Pliny
indivisible, atomic, that cannot be cut;

Credits:
This, our local install of the popular standby Whitaker's Words, is possible thanks to the resurrection of the venerable project at William Whitaker's Words, where you will also find extensive documentation. The corresponding GitHub repository is where you can submit issues about missing forms and analyses.
This web interface by Walter M. Shandruk.