dubbele

Dubbele is a Dutch adjective meaning "double" or "twofold." It is used to describe something that consists of two identical or paired parts and can function as an attributive modifier before a noun (for example, dubbele dosis, dubbele beglazing). In many contexts it also appears in fixed phrases such as dubbele punt (colon) or dubbele medeklinker (a sequence of two identical consonants) in spelling.

In usage, dubbele typically accompanies singular nouns and takes the appropriate inflection to agree with gender and number. It also occurs in compounds and technical terms, for instance in discussing double glazing (dubbel glas or dubbele beglazing) and other paired elements.

In science and technology, the term is common in reference to doubleness or duplication. In computing and mathematics, the Dutch terms dubbel or dubbele precisie are used to describe double-precision floating-point numbers, often rendered in English-language sources as double. In biology, dubbele helix is the standard Dutch expression for the DNA double helix.

Etymology traces dubbele to the Dutch word dubbel, itself from Middle Dutch doblel or similar forms, related to German doppelt and English double. The word shares cognates across Germanic languages, all denoting twofoldity or duplication.

Overall, dubbele conveys the idea of two parts, copies, or aspects linked or paired, and it appears across everyday language, technical terminology, and scientific discourse.