Definition of scission in English:



  • 1[mass noun] The action or state of cutting or being cut, in particular.

    • ‘There are lines of continuity, but there are also significant ruptures, scissions and re-orientations.’
    • ‘The gift of her language, therefore, is not one of exfoliation, but of continual scission and concision.’
    • ‘The author argued that the scission between nature and culture is actually a false one, based on erroneous assumptions about the underlying ‘constitution’ of these bipolar terms.’
    • ‘Maybe you suffered some head injury which causes uncontrolled memory scissions?’
    • ‘Budding and scission of a deflated vesicle into two smaller spherical daughters were sometimes observed.’
    1. 1.1Biochemistry Breakage of a chemical bond, especially one in a long chain molecule so that two smaller chains result.
      ‘this bacteriophage catalyses scission of DNA strands’
      • ‘Strand scission in DNA can result from the production of a carbon-based radical following hydrogen atom abstraction from deoxyribose.’
      • ‘Indeed, the assembled repair complex just before strand scission (loss of antibody binding) is composed of multiple subunits.’
      • ‘By contrast, the formation of photosensitized frank scissions, which must arise from sugar oxidation, is not usual.’
      • ‘As it can be seen on the electrophoresis gel, the frank scission is highly selective.’
      • ‘These trimetal clusters cleaved DNA through single-strand scission by use of UV light as the trigger.’
      opening, aperture, space, breach, chink, slit, slot, vent, crack, crevice, cranny, cavity, hole, orifice, interstice, perforation, break, fracture, rift, rent, fissure, cleft, divide, discontinuity
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    2. 1.2[count noun]A division or split between people or parties; a schism.
      ‘a scission arose between the socialists and those further to the left’
      • ‘For them increasing poverty and social scission seems at best a distant rumour.’
      division, split, rift, breach, rupture, break, separation, severance, estrangement, alienation, detachment
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Late Middle English: from Old French, or from late Latin scissio(n-), from scindere cut, cleave.