Englishfor English speakers
spontaneously
Adverb
—
If something happens spontaneously, it happens randomly or suddenly.
fissile
—
adjective
capable of being split or cleft or divided in the direction of the grain
fissile crystals
fissile wood
—
adjective
(= fissionable)
capable of undergoing nuclear fission
a fissionable nucleous
fissionable material
isomer
—
noun
a compound that exists in forms having different arrangements of atoms but the same molecular weight