obiter dictum \obiter dictum\ ([o^]b"[i^]*t[~e]r d[i^]k"t[u^]m), n.; pl. {obiter dicta} ([o^]b"[i^]*t[~e]r d[i^]k"t[.a]). (Law), An incidental and collateral opinion uttered by a judge. See {Dictum}, n., 2 (a) . [1913 Webster]