Pol`y*mer"ic (?), a. [Poly- + Gr. &?; part.] (Chem.) Having the same percentage composition (that is, having the same elements united in the same proportion by weight), but different molecular weights; -- often used with with; thus, cyanic acid (CNOH), fulminic acid (C₂N₂O₂H₂), and cyanuric acid (C₃N₃O₃H₃), are polymeric with each other.

&fist; The figures expressing the number of atoms of each element in a number of polymeric substances are respectively multiples and factors of each other, or have some simple common divisor. The relation may be merely a numerical one, as in the example given above, or a chemical one, as in the case of aldehyde, paraldehyde, and metaldehyde.

• (chemistry) of, relating to, or consisting of a polymer