10kertainen

10kertainen is a term used to describe a factor of ten relative to a reference value. It denotes that a quantity has become ten times as large as the baseline. In English, the corresponding expression is tenfold.

Etymology and orthography: The component "kertainen" means "times" or "multiplicity" in Finnish. In Finnish texts the usual form is 10-kertainen (hyphenated), while the native adjective form "kymmenkertainen" is also used to express the same idea. The choice of form depends on style guides and context, with hyphenated forms common in technical writing and compound numerals.

Usage and examples: The phrase can describe growth, quantity, or effect. Examples: 10-kertainen kasvu means tenfold growth; a population increasing from 1,000 to 10,000 is a tenfold increase. In mathematics, if y = 10x, then y is ten times x; if x = 3, then y = 30.

Relation to other terms: Tenfold is conceptually the same as a multiplicative factor of ten and differs from a 900% increase, which is a relative percentage change. The term is common in Finnish economics, biology, and statistics, and is often used for concise description of scale. See also: tenfold, multiplicative factor, exponential growth.