Verkleiner
Verkleiner is a nominal form that is occasionally found in German, but it is not a standard lemma in modern dictionaries. The canonical verb is verkleinern, meaning to reduce in size, extent, or number. The noun form most commonly used to express the result or process is Verkleinerung (reduction, shrinking). The form Verkleiner, when encountered, is typically a rare or archaic use, often as a surname or within a compound noun such as Verkleinerer, which would denote something that makes smaller, though this is not common standard usage. Etymology: from klein 'small' with the prefix ver-, denoting a resultant or completed action. In practice, if you see Verkleiner outside a proper noun, it is likely a misprint or a limited dialectal occurrence.