ritkulv
    1. rarefy
      USA: re'rʌ·faɪ· UK: reərɪfaɪ
    1. attenuate
      USA: ʌ·te'nyuː·eɪ"t UK: ətenjʊɪt
ritkulásnoun
  1. phys
    1. rarefaction
      UK: reərɪfækʃn
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