(linguistics) a word class that indicates the mood of an utterance

A tiny piece of radioactive material that can become lodged in living tissue.

plural of weakly interacting massive particle

plural of strongly interacting massive particle

plural of gravitationally interacting massive particle

plural of super weakly interacting massive particle

(physics) The concept applying to all matter and radiation, but most evident in light and particles such as the electron, that properties of waves and of particles are exhibited simultaneously

(physics) A subatomic particle with an unusually long lifetime and a large mass; a bound state of a charm quark and an anti-charm quark.

(astronomy) A high-energy particle coming from the Sun.

(astronomy, physics) A hypothetical class of particle, proposed to explain the dark matter problem.