Manual article review is required for this article
Manual article review is required for this article
Manual article review is required for this article
Manual article review is required for this article
substitution, commutation, Trade - the act of putting another thing or man or woman in the location of another: "he sent Smith in for Jones though the substitution came also late to help"2. 1 that replaces another: The retiring supervisor's replacement will commence next month. The company sent a replacement for the weakened merchandise. /message /