noun-modifying (irregular)
ground-; relative to the ground
Prenominal modifier used in technical, military, and aviation contexts to describe something relative to the ground, such as ground speed, ground attack, or ground clearance.
対地速度は時速800キロに達した。
The ground speed reached 800 km/h.
その戦闘機は対地攻撃能力が高い。
The fighter has high ground-attack capability.