ultraenergetic
adjective
ul·tra·en·er·get·ic ˌəl-trə-ˌe-nər-ˈje-tik 
: having or showing a great deal of energy : extremely or extraordinarily energetic
ultraenergetic college students
ultraenergetic cosmic rays
Word History
First Known Use
1848, in the meaning defined above
- sidereal time
- sidereal year
- sidereal years
- siderin yellow
- siderism
- siderite
- siderites
- sideritic
- sideritides
- Sideritis
- sideritises
- sideritisses
- sidero-
- sideroads
- sideroblasts
- siderocytes
- siderograph
- siderographer
- siderographic
- siderography
- siderolite
- siderolites
- sideromelane
- sideronatrite
- sideropeniae