IPA: //ˈprɒsθətɪst//
KK: /prɑsˈθɛtɪst/
A professional who designs, creates, and fits artificial limbs or other prosthetic devices for people who have lost limbs or have disabilities.
The prosthetist helped the patient find the right artificial leg to improve mobility.
Prosthetist → It is formed from "prosthesis" (from Greek "prosthesis", meaning addition or attachment) and "-ist" (meaning one who practices or specializes in). A prosthetist is a specialist who creates and fits artificial limbs or devices as an addition to the body.
Think of a 'prosthesis' as an 'addition' to the body, and remember that a 'prosthetist' is someone who specializes in making those additions.