Ideographic: An insect 虫 bite 饣; 饣 also provides the pronunciationRadical:

meaning for shí:

  • - to nibble away at sth
  • - to eat into
  • - to erodeto erode
  • - to corrodecorrosion
  • - to corrode (degrade chemically)
  • - to rot
  • - corruptionwind erosionto corrode
  • - to expose by corrosion (geology)corrosion
  • - rust