blastocyst
US /ˈblæs.tə.sɪst/
UK /ˈblæs.tə.sɪst/
名詞
1.
胚盤胞
a blastula (= the early stage of development, consisting of a layer of cells around an empty space) of the embryo of a mammal:
例:
•
Five to six days after an egg is fertilized by a sperm, a tiny ball of cells develops called a blastocyst.
Lingolandでこの単語を学ぶ