Kolmandiku

Kolmandiku is the genitive singular form of kolmandik, the Estonian word for one third or a third part. The term is used to express a fraction of a whole and appears in mathematical, statistical, and everyday quantification. As a standard noun in Estonian, kolmandik declines across cases, and kolmandiku is used in places where the genitive form is required, such as in phrases describing the portion of something.

In practice, kolmandik is employed to indicate proportions, for example in constructions meaning “one third of X.” The exact grammatical form of the accompanying noun depends on the broader syntactic structure, with kolmandik serving as the numerator or part of a genitive relationship in phrases like “kolmandiku osa” (one third of the part) or “kolmandiku väärtus” (the value of one third).

The phrase kolmandiku võrra is used to denote an increase or decrease by one third, translating roughly to “by one third.” In addition to kolmandik, Estonian uses related fractional terms such as pool (half) and kvartal (quarter), each with its own typical syntactic usage in numbers and descriptions of portions.

Overall, kolmandiku functions as a grammatical form tied to the concept of one third within Estonian fractional expressions, appearing in instructional, mathematical, and common-language contexts. See also kolmandik, fraction, and Estonian numerals.