Definition
A metric system prefix meaning ten. When attached to a unit of measurement, it multiplies that unit by ten. The standard symbol is 'da'.
Plain English
A prefix that means 'ten times.' If you see it in front of a unit, multiply that unit by ten.
Context Anchor
Seen in metric measurement discussions, especially when reading technical, maintenance, or international aviation material that uses metric units.
Derivation
From the Greek 'deka,' meaning ten. The same root appears in 'decade' (ten years) and 'decathlon' (ten events), which makes the 'ten' meaning easy to remember.
Why Pilots Care
Pilots and mechanics must read units correctly. Confusing deka with another metric prefix could make a distance, amount, or measurement ten times different from what was intended.
Intuition Check
Do not treat deka and deca as two different prefixes. They are spelling variants of the same metric prefix, and both mean ten times the base unit.
Example Sentence 1
One dekameter equals ten meters.
Example Sentence 2
The chart scale showed distances in dekameters for the short taxi route.