Question

meaning of the prefix \sub-\, meaning of the root \atom\, meaning of the suffix \-ic\, definition of \subatomic\, relating to particles that are smaller than an atom, such as an atoms protons, neutrons, and electrons, relating to the process of changing the state of matter, such as solid to liquid to gas, under; below, having to do with; relating to, relating to all of the basic substances that make up matter or to the elements found in the periodic table

Explanation:

The prefix "sub -" means under or below. The root "atom" refers to the smallest division. The suffix "-ic" means having to do with or relating to. So "subatomic" relates to particles smaller than an atom like protons, neutrons, and electrons.

Answer:

Meaning of the prefix "sub -": under; below
Meaning of the root "atom": uncut, the smallest division
Meaning of the suffix "-ic": having to do with; relating to
Definition of "subatomic": relating to particles that are smaller than an atom, such as an atom's protons, neutrons, and electrons