• (n.) A hypothetical component of a chemical atom, on the theory that the elements themselves are complex substances; -- called also atomicule. Found on http://thinkexist.com/dictionary/meaning/subatom/
Sub·at'om noun (Chemistry) A hypothetical component of a chemical atom, on the theory that the elements themselves are complex substances; -- called also atomicule . Found on http://www.encyclo.co.uk/webster/S/220