The honorific FRS after Michael Faraday’s name means Fellow of the Royal Society. It identifies election to the fellowship of the Royal Society of London, one of Britain’s oldest and most prestigious scientific institutions.
Faraday was elected a Fellow in 1824, well before his most famous work on electromagnetic induction and the laws of electrolysis had fully established his later reputation. Fellowship recognized his important chemical investigations and growing standing at the Royal Institution and in British science.
FRS is a post-nominal designation, meaning it is written after a person’s name. It is not a hereditary title and does not mean “Professor” or “Sir.” Faraday declined a knighthood, preferring to remain “plain Mr Faraday,” but he accepted and valued scientific recognition such as Royal Society fellowship.
The abbreviation can be confused with other British honors, including KBE, which denotes a rank in the Order of the British Empire. FRS specifically refers to membership of the Royal Society and is used by scientists across disciplines.