1Forming personal nouns and related adjectives denoting an adherent of a system of beliefs, principles, etc. expressed by nouns ending in -ism.See -ism (sense 2)‘hedonist’
- 1.1Forming nouns and related adjectives denoting a person who subscribes to a prejudice or practices discrimination.
2Forming nouns denoting a member of a profession or business activity.‘dentist’
- 2.1Forming nouns denoting a person who uses a thing.‘motorist’
- 2.2Forming nouns denoting a person who does something expressed by a verb ending in -ize.
From Old French -iste, Latin -ista, from Greek -istēs.