Origin of deci-French deci- from Classical Latin decimus, tenth from decem, ten
Origin of deci-French déci- from Latin decimus tenth from decem ten ; see dek&mlowring; in Indo-European roots.
- Units formed using this prefix are not often used in official scientific contexts. For example, "1 dm" (one decimetre) would be written as "100 mm" or "0.1 m".
From Latin decimus, tenth