adj ·Rare ·Advanced level

Definitions

Adjective

1. 1
   Operated by both fluid and air power not-comparable
2. 2
   Being, or pertaining to, a type of automotive suspension system based on a nitrogen springing medium. not-comparable

Etymology

From hydro- + pneumatic.

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