mes·o·blast 
(mĕzə-blăst′, mĕs-)
(mĕzə-blăst′, mĕs-)n.
The middle germinal layer of an early embryo, consisting of undifferentiated cells destined to become the mesoderm.
mes′o·blastic adj.
- destructive
- destructive distillation
- destructive interference
- destructively
- destructiveness
- destructivity
- destructor
- desuetude
- desulfurization
- desulfurize
- desultorily
- desultoriness
- desultory
- desvenlafaxine
- detach
- detachability
- detachable
- detachably
- detached
- detachedly
- detachedness
- detachment
- detail
- detailed
- detailer