密度

mìdù
density; concentration

CEDICT

Entry Composition

1 密 mì
  1. dense; close; thick
  2. intimate; close
  3. (bound form) secret; confidential
  4. (Internet slang) to send a private message to (sb); to DM
2 度 dù
  1. to pass
  2. to spend (time)
  3. measure
  4. limit
  5. extent
  6. degree of intensity
  7. degree (angles, temperature etc)
  8. kilowatt-hour
  9. classifier for events and occurrences