classifier

noun

clas·​si·​fi·​er ˈkla-sə-ˌfī(-ə)r 

1

: one that classifies

specifically : a machine for sorting out the constituents of a substance (such as ore)

2

: a word or morpheme used with numerals or with nouns designating countable or measurable objects

Examples of classifier in a Sentence

Recent Examples on the Web

Companies that purchase and deploy AI models could, in the past, train these classifiers themselves, but the process was time-consuming and potentially expensive, since developers would have to collect examples of content that violates the policy in order to train the classifier. —Beatrice Nolan, Fortune, 5 Nov. 2025

Require teams to combine deterministic approaches (rules, regex, knowledge bases) with probabilistic AI (LLMs, ML classifiers). —Daniel Fallmann, Forbes.com, 11 Sep. 2025

Lo and behold, University of Pennsylvania was a major educator of this whole school of ethnologists and medical classifiers. —Chava Pearl Lansky, JSTOR Daily, 30 July 2025

These visual challenges increase the possibility that existing classifiers will miss victims. —Robin R. Murphy, The Conversation, 16 July 2025

Word History

First Known Use

1799, in the meaning defined at sense 1

Rhymes for classifier

• amplifier
• clarifier
• gasifier
• magnifier
• modifier
• multiplier
• occupier
• pacifier
• purifier
• qualifier
• quantifier
• rectifier