Definition of peripediment in English:

peripediment

noun

Geomorphology
  • A broad, gently sloping surface on detrital alluvium that either extends outwards from a mountain foot in an arid or semi-arid region or else smoothly continues the line of an intervening pediment.

Origin

1940s. From peri- + pediment.

Pronunciation

peripediment

/ˌpɛrɪˈpɛdɪm(ə)nt/