IPA: //baɪ.oʊˈɛθ.ɪ.sɪst//
KK: /baɪoʊˈɛθɪsɪst/
A person who studies and provides guidance on ethical issues related to biology and medicine.
The bioethicist advised the hospital on the ethical implications of the new treatment.
Bioethicist → It is formed from "bio-" (from Greek "bios", meaning life) and "ethics" (from Greek "ethikos", meaning moral or relating to character) and the suffix "-ist" (meaning one who practices or is concerned with). A bioethicist is someone who is concerned with the moral implications of biological and medical practices.
Think of 'life' ('bio-') and 'morals' ('ethics') to remember that a bioethicist is someone who deals with the moral questions surrounding life and health.