Etymology

From gravity +‎ damCategory:English compound terms#GRAVITYDAM. From using the weight of the dam to withstand the force of water being impounded.

Noun

gravity dam (plural gravity dams)Category:English lemmas#GRAVITYDAMCategory:English nouns#GRAVITYDAMCategory:English countable nouns#GRAVITYDAMCategory:English multiword terms#GRAVITYDAMCategory:English entries with incorrect language header#GRAVITYDAMCategory:Pages with entries#GRAVITY%20DAMCategory:Pages with 1 entry#GRAVITY%20DAM

1. An impoundment dam that is wider at the base than at the top, and which uses the massive weight of the dam's mass to withstand the force of water being stored behind the dam in its reservoir.