it is also the lightest element isotopes are atoms of the same element with different numbers of neutrons in ancient times the elements referred to fire earth water and air helium is the second most common element in the universe but is very rare on the earth
Featherweight is a weight class in the combat sports of boxing, kickboxing, mixed martial arts and Greco-Roman wrestling.
a boxer or other contestant intermediate in weight between a bantamweight and a lightweight, especially a professional boxer weighing up to 126 pounds (57 kg). 2. He thinks he's a major composer, but he's just a featherweight. 3. belonging to the class of featherweights, especially in boxing.