Backdeep

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A deeply subsiding, epieugeosynclinal basin or trough (epieugeosyncline) with no or limited volcanism (associated with narrow uplifts over a deformed, intruded eugeosyncline, from which it derives its sediments); a postorogenic geosynclinal basin.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.