-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.
moment in Mechanical Engineering (moÊmÉnt) A moment is the ability of a force to turn, twist, or bend. It is equal to the force multiplied by the distance from the center of twisting, turning, or bending. Using a long-handled wrench allows a greater moment to be applied to the nut. Torque is the moment of force which tends to twist a structure.