1) Meq 
One-thousandth equivalent; 10-3 mole divided by valence. ... (05 Mar 2000) ... 
(mEq) (mil″e-e-kwiv´ә-lәnt) one thousandth (10−3) of a chemical equivalent (see equivalent weight). Concentrations of electrolytes are often expressed as milliequivalents per liter, which is an expression of the chemical combining power of the electrolyte in a fluid.
(mEq, meq) Type: Term Pronunciation: mil′i-ē-kwiv′ă-lent Definitions: 1. The equivalent of one thousandth; 10−3 mol divided by valence.
[n] - one-thousandth of an equivalent
meq noun one-thousandth of an equivalent