IPA: //ˈbæθɪˌskæf//
KK: /ˈbæθɪˌskæf/
A type of submersible vessel designed for deep-sea exploration, capable of withstanding high pressure at great depths.
The researchers used a bathyscaph to explore the ocean floor and study marine life.
Bathyscaph → It is formed from "bathy-" (from Greek "bathyos", meaning deep) and "-scaphos" (from Greek "skaphos", meaning boat or vessel). The word refers to a vessel designed for deep-sea exploration, hence a deep boat.
Think of 'deep' ('bathy-') and 'boat' ('-scaphos') to remember that a bathyscaph is a vessel designed for exploring the depths of the ocean.
No commonly confused words.