Deka

Part of speech: noun, prefix

Definitions

1. A metric prefix denoting a factor of ten, commonly used in measuring units like decagrams or decimeters
2. Referring to the quantity of ten in various contexts, particularly in scientific and mathematical applications
3. A term from the metric system representing ten of a given unit, facilitating conversions and calculations in measurements

Etymology: "Deka" is a combining form drawn from Greek "deka," meaning "ten," which also appears in English words like "decade" and "decathlon." Its most consequential use is in the metric system, where it was adopted in the late 18th century, when French scientists created the metric system and named multiples and submultiples by Greek prefixes. In that scheme "deca-" (in its SI spelling, "deka" is an accepted variant) marks a factor of ten, so a "dekameter" is ten meters. The prefix sits in an interesting spot in the modern system. Most metric prefixes step by factors of a thousand, which makes "deka" and its neighbour "hecto" (a hundred) feel like odd leftovers. Their survival is partly practical: the decametre and hectare remain in common use, though the deka- prefix is rarely used beyond such examples.

Synonyms: ten, decade, tenfold, deka- (prefix), decem

Antonyms: one, single, unit, monad