Webster’s Revised Unabridged Dictionary · 1913 Obiter Ob′i·ter (ŏb′ĭ·tẽr), adv. [L., on the way; ob (see Ob-) + iter a going, a walk, way.] In passing; incidentally; by the way. Obiter dictum (Law), an incidental and collateral opinion uttered by a judge. See Dictum, n., 2 (a). ‹ Obit Obitual ›