內心

内心
nèixīn
  1. heart; innermost being
  2. (math.) incenter

CEDICT

math

Entry Composition

1 內 nèi
  1. inside
  2. inner
  3. internal
  4. within
  5. interior
2 心 xīn
  1. heart
  2. mind
  3. intention
  4. center
  5. core

classifiers: 顆, 個