-blast
/blɑːst/combining form
1- Biology denoting an embryonic cell【生】表示“胚胎”。比较-CYTE.:
erythroblast.
1.1
- denoting a germ layer of an embryo表示“胚层”, “胚芽”：
epiblast.
词源
from Greek blastos 'germ, sprout'.