Definify.com
Webster 1913 Edition
Ob-
Ob-
.[L.
ob
, prep. Cf. Epi-
.] A prefix signifying
to
, toward
, before
, against
, reversely
, etc.; also, as a simple intensive; as in oblige, to bind to; obstacle, something standing before; object, lit., to throw against; ob
ovate, reversely, or oppositely, ovate. Ob- is commonly assimilated before c, f, g, and p, to oc-, of-, og-, and op-.