küçültücü

Küçültücü is a Turkish term that functions as both an adjective and a noun, meaning “the one that reduces” or “a reducing agent.” It is formed from the verb küçültmek (to reduce) plus the agent suffix -cü (with various spellings such as -cu, -cü, -çü, -cü) in keeping with Turkish vowel harmony. The word is most often used to describe something that causes shrinkage in size, scale, intensity, or value.

In usage, küçültücü can refer to a person, device, or process that reduces. For example, küçültücü cihaz means a device that reduces size, while küçültücü etkisi can describe a reducing effect. In linguistic discussions, the term may appear when describing mechanisms that produce diminutives, although Turkish typically marks diminutives with suffixes like -cık, -cik, -çuk, or -çük rather than naming the process as küçültücü.

Etymologically, the word reflects Turkish morphology: küçült- is the root meaning “to reduce,” and the suffix -cü turns the verb into an agent noun/adjective indicating the cause or instrument of the action. The form adjusts to fit phonological harmony within a sentence.

The term is most common in technical, scientific, or descriptive prose rather than everyday speech. It is flexible as both an adjective and a noun and can be pluralized or made possessive as required by Turkish grammar.

See also: küçültme, diminutive suffixes in Turkish, Turkish agent suffixes. Further reading on diminutive formation can clarify how Turkish expresses size reduction through morphology and terminology.