Reálna

Reálna is the feminine singular form of the adjective reálny in Slovak and Czech. It means real, genuine, or actual and is used to describe feminine nouns, such as hodnota (value), udalosť (event), or situácia (situation). In everyday language it often signals that something corresponds to actuality or reality, as in reálna hodnota or reálna situácia.

Etymology and usage across languages: Reálny and its feminine form reálna come from a Latin root realis, through the historical development of West Slavic languages. The form reálna is encountered whenever a feminine noun is modified by the sense of reality, authenticity, or factualness.

Mathematical usage: In mathematics, the real-number concept is expressed with the neuter form reálne číslo (real number) in Slovak and Czech. The word reálne functions as the neuter adjective before číslo, while the broader idea of reality in mathematics contrasts real numbers with complex numbers. Phrases such as reálne čísla or reálne-valued functions describe objects that can be represented on the real number line.

Notes on grammar and style: The form reálna appears only with feminine nouns. Adjectival forms of reálny extend to masculine reálny, neuter reálne, and feminine reálna, enabling precise agreement with the gender of the modified noun. The term is common in formal writing as well as colloquial speech when emphasizing factual or genuine characteristics.