ability to live, especially under certain conditions: The viability of a fetus outside the womb has increased dramatically with the advent of new technologies and procedures. 2. the capacity to operate or be sustained: The viability of the company was guaranteed by the success of its new product. Related forms.
Hypervelocity is very high velocity, approximately over 3,000 meters per second (6,700 mph, 11,000 km/h, 10,000 ft/s, or Mach 8.8). In particular, hypervelocity is velocity so high that the strength of materials upon impact is very small compared to inertial stresses. Thus, even metals behave like fluids under hypervelocity
mesÂ·oÂ·ceÂ·phalÂ·ic. Having a head of medium length; denoting a skull with a cephalic index between 75 and 80 and a capacity of 1350-1450 mL, or any person with such a skull. normocephalic. adjective Referring to a head of normal shape and of normal size for the personâs age.