[Middle English, convenient, from Medieval Latin commodiōsus, from Latin commodus : com-, com- + modus, measure; see med- in Indo-European roots.] com·mo'di·ous·ly adv., com·mo'di·ous·ness n.
1423, "beneficial, convenient," from M.L. commodiosus "convenient, useful," from L. commodus (see commode). Meaning "roomy, spacious" first attested 1533.