- The coming together of waves in various media 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.
- Collision within the myocardium of two waves of excitation at the junction of territories controlled by each, as is seen in atrioventricular (AV) dissociation.
- Also in AV dissociation, the disturbance of the regular rhythm of the ventricles by a conducted impulse from the atria, by a ventricular capture (interference beat).
- The condition in which infection of a cell by one virus prevents superinfection by another virus, or in which superinfection prevents effects that would result from infection by either virus alone, even though both viruses persist.
[inter- + L. ferio, to strike]
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Examples: glitazone, GI cocktail, etc.