Radiation

[Britney]

Energy radiated in the form of waves or particles

[Little_Girl]

The word frequently shouted by people who look like nuclear owls when choosing a map on Call Of Duty: Black Ops

[Sarah]

Meaning of wearing so much [jewelry] and the sun [heats] it up and causes [RADIATION]

[Zipporah Schumaker]

[Heat] [transfer] via [electromagnetic waves].

[Kit]

The emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles which cause ionization.