In the process some of the mass of the hydrogen atoms is converted into energy in the form of light. The same process occurs in thermonuclear (fusion) bombs. In the Sun the process occurs in a controled manner.
â¢ POSTER CHILD (noun) The noun POSTER CHILD has 1 sense: 1. a child afflicted by some disease or deformity whose picture is used on posters to raise money for charitable purposes. Familiarity information: POSTER CHILD used as a noun is very rare.
noun. The definition of a poster is a large print, ad or decoration that can be displayed or hung on the wall. A large print showing the name of a movie and an enticing picture to try to get you to come to the movie is an example of a movie poster.