אטום

Through European languages, from Latin atomus (“smallest particle”), from Ancient Greek ἄτομος (átomos, “indivisible”), from ἀ- (a-, “not”) +‎ τέμνω (témnō, “I cut”).

אָטוֹם • (atom) m

1. (physics) an atom

• אָטוֹמִי‎ (atomí)

From the root א־ט־ם‎ (ʾ-t-m). Compare with אָטַם‎ (ʾatám, “to seal”).

אָטוּם • (atúm) (feminine אֲטוּמָה‎, masculine plural אֲטוּמִים‎, feminine plural אֲטוּמוֹת‎)

1. closed
   • Ezekiel 40:16, with translation of the American Standard Version:

     ‏וְחַלֹּנוֹת אֲטֻמוֹת אֶל הַתָּאִים‎

     And there were closed windows to the lodges