Definition of attenuated in US English:

attenuated

adjective

  • 1Having been reduced in force, effect, or value.

    ‘it appears likely that the courts will be given an attenuated role in the enforcement of these decisions’
    weakened, reduced, lessened, decreased, diminished, impaired, enervated
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    1. 1.1 (of a signal, electric current, or other oscillation) reduced in amplitude.
      ‘weak or attenuated signals’
    2. 1.2 (of a pathogenic organism) reduced in virulence, especially for use as a vaccine.
      ‘attenuated strains of rabies virus’
  • 2Thin or reduced in thickness.

    ‘his attenuated fingers’
    ‘Giacometti's attenuated figures of the human form’
    thin, slender, slim, skinny, spindly, bony, gaunt, skeletal
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Pronunciation

attenuated

/əˈtenyəˌwādəd//əˈtɛnjəˌweɪdəd/