a (atomic weight)
101molecular weight — /məlɛkjələ ˈweɪt/ (say muhlekyuhluh wayt) noun the average weight of a molecule of an element or compound measured in units based on one twelfth of the weight of an atom of carbon 12; the sum of the atomic weights of all the atoms in a molecule …
102molecular weight — n. the relative average weight of a molecule of a substance, expressed by a number equal to the sum of the atomic weights of all atoms in the molecule …
103equivalent weight — noun Date: circa 1855 the mass of a substance especially in grams that combines with or is chemically equivalent to eight grams of oxygen or one gram of hydrogen ; the atomic or molecular weight divided by the valence …
104molecular weight — (MW) The sum of the atomic weights of all of the atoms within a molecule. Generally, molecules of the same type have higher boiling points if the molecular weight is higher …
105formula weight — Chem. 1. (of a molecule) See molecular weight. 2. (of an ionic compound that does not form molecules) the sum of the atomic weights of the atoms of the formula unit …
106molecular weight — noun Date: 1869 the average mass of a molecule of a compound compared to 1/12 the mass of carbon 12 and calculated as the sum of the atomic weights of the constituent atoms …
107molecular weight — noun the sum of the atomic weights of every atom in a molecule Syn: molecular mass …
108molecular weight — The mass of a molecule that may be calculated as the sum of the atomic weights of its constituent atoms …
109molecular weight — noun (chemistry) the sum of the relative atomic masses of the constituent atoms of a molecule (Freq. 4) • Syn: ↑relative molecular mass • Topics: ↑chemistry, ↑chemical science • Hypernyms: ↑ …
110Atomical — Atomic A*tom ic, Atomical A*tom ic*al, a. [Cf. F. atomique.] 1. Of or pertaining to atoms. [1913 Webster] 2. Extremely minute; tiny. [1913 Webster] {Atomic bomb}, see {atom bomb} in the vocabulary. {Atomic philosophy}, or {Doctrine of atoms}, a… …
