Definition of at om:
°The smallest, indivisible constituent part or unit of something.
°The smallest possible amount of matter which still retains its identity as a chemical element, now known to consist of a
nucleus surrounded by
electrons.
Definition of at om:
°The smallest, indivisible constituent part or unit of something.
°The smallest possible amount of matter which still retains its identity as a chemical element, now known to consist of a
nucleus surrounded by
electrons.