Definition:Metric System/Scaling Prefixes/deka-

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Definition

deka- is the Système Internationale d'Unités metric scaling prefix denoting a multiplier of $10^1$.

Symbol

$\mathrm {da}$

The Système Internationale d'Unités symbol for the metric scaling prefix deka, denoting $10^{\, 1 }$, is $\mathrm { da }$.

Its $\LaTeX$ code is \mathrm {da} .

Also known as

Some sources give deka- as deca-, but this is easily confused with deci-.

As a consequence, deka- is the preferred usage on $\mathsf{Pr} \infty \mathsf{fWiki}$.

Also see

• Definition:Deca-

Linguistic Note

The prefix deka- derives from Ancient Greek δέκα (déka), meaning ten.

Sources

• 1969: J.C. Anderson, D.M. Hum, B.G. Neal and J.H. Whitelaw: Data and Formulae for Engineering Students (2nd ed.) ... (previous) ... (next): $1.$ Units and Abbreviations: $1.1$ Decimal prefixes
• 1989: Ephraim J. Borowski and Jonathan M. Borwein: Dictionary of Mathematics ... (previous) ... (next): deka-
• 2014: Christopher Clapham and James Nicholson: The Concise Oxford Dictionary of Mathematics (5th ed.) ... (previous) ... (next): deka-