verbal noun of vertiefen: deepening (the act of making something deeper; the process of becoming deeper) · depression, recess (spot that is deeper/lower than its surroundings)
çekim: çoğul Vertiefungen · tamlayan Vertiefungen
eş: Einbuchtung, Einsenkung
köken: From vertiefen + -ung. Compare Dutch verdieping, Swedish fördjupning, Middle Low German vördēpinge.