reálná

Reálná is a Czech adjective in its feminine singular form, derived from the word reálný and meaning real, actual, genuine, or factual. It is used to describe feminine nouns and agrees with gender, number, and case. For example, reálná situace means a real or actual situation, and reálná hodnota refers to a real value.

Etymology and forms: The Czech adjective reálný comes from Latin realis, via older European languages such as German or French, and has since become a standard part of Czech vocabulary. In sentences, reálná modifies feminine nouns (for example, reálná teorie, reálná šance). Other gender forms include reálný (masculine) and reálné (neuter or plural forms, depending on case), reflecting Czech adjective agreement rules.

Usage in mathematics and science: In mathematics the term is commonly seen in phrases like reálná čísla, meaning real numbers, and reálné hodnoty, real values. In science, journalism, and everyday language, reálná is used to distinguish what exists in fact from what is hypothetical or fictional, similar to the English real or actual. The word often appears in contrasts such as reálná situace versus ideální či hypotetická situace.

Context and nuance: Reálná conveys a sense of practicality or factual existence. It can describe tangible, demonstrable aspects of a problem or phenomenon or indicate the authentic nature of something as opposed to its appearance. As a grammatical form, it is one of several gendered and case-specific endings of the Czech adjective reálný.