interaction. n. 1. a mutual or reciprocal action or influence. 2. (General Physics) physics the transfer of energy between elementary particles, between a particle and a field, or between fields.nteraction - (physics) the transfer of energy between elementary particles or between an elementary particle and a field or between fields; mediated by gauge bosons. fundamental interaction. natural philosophy, physics-the science of matter and energy and their interactions; his favorite subject was physics.
hemi, semi & demi. These ROOT-WORDS are Prefixes HEMI, DEMI & SEMI meaning HALF. However, there is a difference in the interpretation which each one has of the word. When we say HEMIsphere we donât really mean half of the sphere, we mean one side, right side or left side. When we say DEMI we mean less or not quite, as DEMImillionaire.
A hemisphere is half of a sphere. If itâs a cold winter in the northern hemisphere, take a winter getaway to sunbathe somewhere in the southern hemisphere. Hemisphere comes from the Greek, and combines the prefix hemi-, for half, with sphere, or perfectly round ball.. We talk about the earth as divided at the equator into the northern and southern hemispheres (or divided at the prime meridian into eastern and western hemispheres).