Webster’s Revised Unabridged Dictionary · 1913
Pentatomic
Pen′ta·tom′ic (pĕn′tȧ·tŏm′ĭk), a. [Penta- + atomic.] (Chem.) (a) Having five atoms in the molecule. (b) Having five hydrogen atoms capable of substitution.
Webster’s Revised Unabridged Dictionary · 1913
Pen′ta·tom′ic (pĕn′tȧ·tŏm′ĭk), a. [Penta- + atomic.] (Chem.) (a) Having five atoms in the molecule. (b) Having five hydrogen atoms capable of substitution.