-blast. A suffix meaning an immature precursor cell of the type indicated by the preceding word. [G. blastos, germ]. immature precursor cell type; the cell type is denoted by the preceding syllables, e.g. osteoblast.
(plural defining moments) A moment in time that defines something, such as a person's success or failure, achievement or demise, talent, etc. A point at which the essential nature or character of a person, group, etc., is revealed or identified.
In physics and engineering, moment is usually defined as the force which causes anything to rotate. Just like force, which causes an object to move in a linear direction â¦ . Moment can be treated like the force which causes an object to rotate about a certain defined axis.