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

What The Guardrail Argument Does Not Settle Guardrails is an umbrella term covering distinct layers, including model refusal behavior, request classifiers, account permissions and infrastructure containment. — Janakiram Msv, Forbes.com, 27 July 2026

This means users can now reroute requests flagged by Claude's safety classifiers on Opus 5 or Fable 5 to another model, rather than being blocked outright. — Will McCurdy, PC Magazine, 25 July 2026

But with open source models, these classifiers can easily be stripped away and the guardrails that might be trained into a model can also easily be jailbroken. — Jeremy Kahn, Fortune, 2 July 2026

Over time, Anthropic hopes to make its classifiers more precise, but Penn says this was the only safe way the company could release the model broadly at this time. — Maxwell Zeff, Wired News, 9 June 2026

Word History

First Known Use

1799, in the meaning defined at sense 1

Rhymes for classifier

• acquire
• attire
• bonfire
• campfire
• ceasefire
• conspire
• desire
• enquire
• entire
• greenbrier
• gunfire
• homebuyer