Dictionary.net

any obstruction that impedes or is burdensome

(American football) the act of obstructing someone's path with your body; "he threw a rolling block into the line backer"

any obstruction that impedes or is burdensome

The act or state of interfering; as, the stoppage of a machine by the interference of some of its parts; a meddlesome interference in the business of others.

The mutual influence, under certain conditions, of two streams of light, or series of pulsations of sound, or, generally, two waves or vibrations of any kind, producing certain characteristic phenomena, as colored fringes, dark bands, or darkness, in the case of light, silence or increased intensity in sounds; neutralization or superposition of waves generally.

The act or state of interfering, or of claiming a right to the same invention.

The act or state of interfering; as, the stoppage of a machine by the interference of some of its parts; a meddlesome interference in the business of others.

The mutual influence, under certain conditions, of two streams of light, or series of pulsations of sound, or, generally, two waves or vibrations of any kind, producing certain characteristic phenomena, as colored fringes, dark bands, or darkness, in the case of light, silence or increased intensity in sounds; neutralization or superposition of waves generally.

The act or state of interfering, or of claiming a right to the same invention.

In patent law, a procedure to resolve a conflict that occurs when two or more patent applications have been filed on the same invention. When this happens, the U.S. Patent and Trademark Office (PTO) examines a number of factors in order to determine who gets the patent, including who first conceived of the invention and worked on it diligently, who first built and tested the invention and who was first to file a patent application.

The act of clashing with; the act of meddling in other people's affairs.

1. The coming together of waves from different sources in such a way that the crests of one series correspond to the hollows of the other, the two thus neutralizing each other; or so that the crests of the two series correspond, thus increasing the excursions of the waves. 2. Brushing, in the horse.

Interposition; an intermeddling; a collision; interaction among waves; a striking of one foot against the other.

The intermeddling in the affairs of others; interposition; in optics, a term used to express certain phenomena which result from the mutual action of the rays of light on each other.

In physics, the destruction of sound waves or light waves by other sound or light waves.

n. Act or state of interfering; interposition ;—collision ; clashing.