touchdown
n. C / U B2 Upper Intermediate US //ˈtətʃˌdaʊn// UK //tˈʌtʃdaʊn// touch·down
n. the moment when an aircraft or spacecraft finally lands on the ground.
n. the moment at which an aircraft or spacecraft makes contact with the landing surface. Often used to mark the successful completion of a flight phase.
The pilot announced a smooth touchdown in London.
Passengers began to applaud immediately after the touchdown on the rain-slicked runway.
Mission control confirmed a successful touchdown on the lunar surface, marking the first time a private vessel had landed safely without human intervention.
From touch + down.
Usage
Both countable for specific landing events and uncountable when referring to the general phase of flight.