名詞 blastula:

1. early stage of an embryo produced by cleavage of an ovum; a liquid-filled sphere whose wall is composed of a single layer of cells; during this stage (about eight days after fertilization) implantation in the wall of the uterus occurs
   同義詞：blastodermic vesicle

blas.tu.la

n.（名詞）
【復(fù)數(shù)】 blas.tu.las 或 blas.tu.lae [-lô.] 【胚胎學(xué)】
An early embryonic form produced by cleavage of a fertilized ovum and consisting of a spherical layer of cells surrounding a fluid-filled cavity.Also called blastosphere
囊胚：由分裂受精卵產(chǎn)生的早期胚胎外形，由圍繞充滿液體的洞的球形細(xì)胞層組成也作 blastosphere

來源：
New Latin
現(xiàn)代拉丁語
from Greek blastos [bud]
源自 希臘語 blastos [芽]

【引伸】
blas.tular
adj.（形容詞）
blas.tula.tion