a (atomic weight)
121at. wt — atomic weight …
122at wt — abbreviation atomic weight …
123at. wt. — See atomic weight. * * * …
124a/w — abbr. atomic weight …
125at.\ wt — abbr. atomic weight …
126ATW — abbr. ATomic Weight …
127atom — /at euhm/, n. 1. Physics. a. the smallest component of an element having the chemical properties of the element, consisting of a nucleus containing combinations of neutrons and protons and one or more electrons bound to the nucleus by electrical… …
128Mass — This article is about the scientific concept. For the substance of which all physical objects consist, see Matter. For other uses, see Mass (disambiguation). Classical mechanics …