-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.
F â = m a â {\displaystyle {\vec {F}}=m{\vec {a}}}. In physics, a moment is a turning effect of a force. It is an expression involving the product of a distance and a physical quantity, and in this way it accounts for how the physical quantity is located or arranged.