Meaning of the Sanskrit Word: pathan

  pathan—studying thoroughly    SB 9.22.38
  pathan—by reading    SB 4.23.32
  pathan—by recitation, repeated reading, etc.    SB 1.6.26
  pathan—reciting    SB 6.19.26, SB 6.19.27, SB 6.19.28, SB 6.19.26-28

Can't find any compound Sanskrit words containing pathan.