interferev. i.[OF. entreferir to strike each other; entre between (L. inter) + OF. ferir to strike, F. frir, fr. L. ferire. See Ferula.]()1. To come in collision; to be in opposition; to clash; -- usually used with with; as, interfering claims, or commands; workers in a crowded shop may interfere with each other's activity.()2. To enter into, or take a part in, the concerns of others; to intermeddle; to interpose; -- used with in or with; as, to interfere with the way I raise my children.()To interfere with party disputes. (Swift.)There was no room for anyone to interfere with his own opinions. (Bp. Warburton.)3. To strike one foot against the opposite foot or ankle in using the legs; -- sometimes said of a human being, but usually of a horse; as, the horse interferes.()4. (Physics) To act reciprocally, so as to augment, diminish, or otherwise affect one another; -- said of waves, rays of light, heat, etc. See Interference, 2.()5. (Patent Law) To cover the same ground; to claim the same invention; as, to interfere with another patent.()()