增大

zēngdà
  1. to enlarge
  2. to amplify
  3. to magnify

CEDICT

Entry Composition

1 增 zēng (bound form) to increase; to augment; to add to
2 大 dà
  1. big; large; great
  2. older (than another person)
  3. eldest (as in 大姐 dàjiě)
  4. greatly; freely; fully
  5. (dialect) father
  6. (dialect) uncle (father's brother)