the ratio of the average mass per atom of the naturally occurring form of an element to one-twelfth the mass of an atom of carbon-12 Ar, r.a.m. Former name atomic weight
relative atomic mass
See atomic weight.
noun, Navigation. 1. the bearing of an object, relative to the heading of a vessel or aircraft.
noun 1. a subordinate clause introduced by a relative pronoun, adjective, or adverb, either expressed or deleted, especially such a clause modifying an antecedent, as who saw you in He’s the man who saw you or (that) I wrote in Here’s the letter (that) I wrote.
noun, Mathematics. 1. the set of elements contained in a given set that are not elements of another specified set.
noun, Physics. 1. specific gravity. relative density noun 1. the ratio of the density of a substance to the density of a standard substance under specified conditions. For liquids and solids the standard is usually water at 4°C or some other specified temperature. For gases the standard is often air or hydrogen at the same […]