customer-furnished
customer-member
customer-request
customer-size
customer-specified
customhouse
custom-tailored
cut
cutback
cutcase
  cut-off
cutoff
cutout
cut-price
cut-rate
cutthroat
cybernetics
cycle
cyclegraph
cyclic
cyclical

    cut-off grade

    содержание металла в руде , при котором добыча становится нерентабельной