滋养层 zī yǎng céng

DEFINITIONS

  1. trophoblastic layer (attaches fertilized ovum to the uterus)
  2. trophoderm

CHARACTERS

滋 zī
HSK 6
grow, multiply, increase; thrive
养 yǎng
HSK 4
raise, rear, bring up; support
层 céng
HSK 3
story, layer, floor, stratum