Look up: underflow

1. underflow
   continuous rectangular designs...exhibit...high maintenance costs and do not provide good effluent clarities at heavy underflow concentrations. Category: Iron and steel industries • pertaining to the condition that arises when a machine computation yields a non-zero result that is smalle...
   Found on http://www.mijnwoordenboek.nl/definition
   
   
2. underflow
   (programming) (or 'floating point underflow', 'floating underflow', after 'overflow') A condition that can occur when the result of a floating-point operation would be smaller in magnitude (closer to zero, either positive or negative) than the smallest quantity representable. Underflow is actually ...
   Found on http://foldoc.org/underflow
   
   
3. Underflow
   The dominant flow of two confronting flows, over the other. The lesser flow reverses direction giving poor surface appearance and structural strength. Underflow should be avoided by positioning gates so that the flow fronts meet at the end of filling.
   Found on http://www.blowmachines.com/glossary1.ht