-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.
QUltimate Moment (Strength) â The ultimate moment for a reinforced. concrete beam can be defined as the. moment that exists just prior to the failure. of the beam. â In order to evaluate this moment, we have. to examine the strains, stresses, and. forces that exist in the beam. â The beam of Fig. 1 has a width of b, an.