before a vowel, dec-, word-forming element meaning "ten," from Latinized comb. form of Greek deka "ten" (see ten). In the metric system, "multiplied by ten;" while deci- means "divided by ten."
deca- or dec- or deka- or dek-
pref.
Ten: decane.
deca- A prefix that means "ten," as in decahedron, a polygon having ten faces. |