say it again

SAY IT AGAIN DEXTER; ATOMIC BOMB, WEAPON WITH GREAT EXPLOSIVE POWER THAT RESULTS FROM THE SUDDEN RELEASE OF ENERGY UPON THE SPLITTING, OR FISSION, OF THE NUCLEI OF A HEAVY ELEMENT SUCH AS PLUTONIUM OR URANIUM.6 AUGUST 1945 ON 6 AUGUST 1945, AT 08:15, THE FIRST EVER ATOMIC BOMB WAS DROPPED ON THE CENTRE OF HIROSHIMA