gas·tru·la 
(găstrə-lə)
(găstrə-lə)n. pl. gas·tru·las or gas·tru·lae (-lē′)
An embryo at the stage following the blastula, after the movement of cells results in the formation of the three germ layers, ectoderm, mesoderm, and endoderm.
[New Latin : Greek gastēr, gastr-, belly + Latin -ula, feminine diminutive suff.]
gastru·lar (-lər) adj.
- converge
- convergence
- convergency
- convergent
- convergent evolution
- conversance
- conversancy
- conversant
- conversantly
- conversate
- conversation
- conversational
- conversationalist
- conversationally
- conversationist
- conversation piece
- conversazione
- converse
- converse
- conversely
- conversion
- conversional
- conversionary
- conversion disorder
- conversion factor