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.
WordReference Random House Unabridged Dictionary of American English Â© 2016. posâ¢terâ¢iâ¢ty (po sterâ²i tÄ), n. 1  succeeding or future generations collectively:Judgment of this age must be left to posterity.  all descendants of one person:His fortune was gradually dissipated by his posterity.