ascensionist

One who carries out ascents, such as a balloonist or mountaineer.

Japanese Meaning

登頂を行う者、例として登山家や気球操縦士など

The ascensionist checked the weather one last time before starting the ascent.

登山家は出発前にもう一度天気を確認した。

Sense（1）

One who carries out ascents, such as a balloonist or mountaineer.

ascensionists

（ plural ）