scission

scission
[ˈsɪʃ(ə)n]
noun
  1. [mass noun](technical)the action or state of cutting or being cut, in particular
    (技)切割,切断;尤指
    ■(chiefly Biochemistry)breakage of a chemical bond, especially one in a long chain molecule so that two smaller chains result
    (主生化)(化学键)断裂(尤指一长链分子中的化学键,因断裂而产生两个较短的分子链)
    ■[count noun]a division or split between people or parties; a schism
    (人群或政党间的)分裂
语源
  1. late Middle English: from Old French, or from late Latin scissio(n-), from scindere 'cut, cleave'
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