Meaning of the Sanskrit Word: anantasya

  anantasya—of the unlimited    SB 1.6.26, SB 3.11.38, SB 8.20.21
  anantasya—of the unlimited Lord    SB 1.5.11, SB 7.8.9
  anantasya—of the Supreme    SB 2.1.31
  anantasya—of Ananta, the resting incarnation of Godhead    SB 2.2.26

Can't find any compound Sanskrit words containing anantasya.