Definition of perforin in English:

perforin

noun

Biochemistry
  • [mass noun] A protein, released by killer cells of the immune system, which destroys targeted cells by creating lesions like pores in their membranes.

    • ‘The CD8 cells of long-term nonprogressors produce more perforin than do CD8 cells of HIV-positive people who developed AIDS, the scientists found.’

Origin

1980s: from the verb perforate + -in.

Pronunciation:

perforin

/ˈpəːfərɪn/