Kettszálú

Kettszálú is a Hungarian adjective meaning two-stranded, describing objects that consist of two strands or threads that are parallel, paired, or twisted together. The form is a descriptive label used across disciplines, and in standard Hungarian verbs and adjectives related to this concept more common spellings exist, such as kétszálú or kettősszálú. Kettszálú can appear in older texts or as a variant spelling.

In biology, kettszálú is used to refer to double-stranded nucleic acids, most notably double-stranded DNA and double-stranded RNA. The two strands are typically complementary and held together by base pairing, creating a stable macromolecule. Double-stranded nucleic acids have characteristic geometries and properties distinct from single-stranded forms, influencing replication, transcription, and structural organization.

In textiles and fibers, kettszálú describes yarns or fabrics made from two plies twisted together. Two-stranded yarns are generally stronger and thicker than single-strand equivalents and are used to achieve specific textures, finishes, or performance characteristics in textile products.

In engineering, materials science, and cable construction, the term applies to components formed from two strands—whether wires, fibers, or tendons—that are arranged in parallel or twisted to enhance strength, flexibility, or load distribution. The exact arrangement and materials of the two strands determine the performance of the kettszálú component in its intended application.

See also: kétszálú, kettősszálú, double-stranded.