ISEE/SSAT Vocabulary Builder›Word parts›Number parts›dec
Number partLatin
dec
ten
Latin decem, ten: a decade counts ten years, a decagon has ten angles, and a decathlon joins ten contests.
Words built from it
- decade — a period of ten years
dec (ten) + -ade (group of) - decimal — relating to a counting system based on ten
dec (ten) + -imal (relating to) - decathlon — an athletic contest made up of ten events
dec (ten) + athlon (contest) - decagon — a ten-sided figure
dec (ten) + -agon (angle, shape) - decennial — occurring every ten years
dec (ten) + enn (year) - decimate — to destroy a large portion of something
dec (ten) + -imate (to make)
Looks like it, but is not
- decent — from Latin decere 'to be fitting, suitable'; unrelated to decem 'ten'
- decor — from the same Latin decere 'to be fitting'; refers to attractive style, not the number ten
- decorum — also from decere 'to be fitting'; means 'proper behavior,' with no connection to ten
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More number parts
- bi, di, du/deu — two, divided
- hept, sept — seven
- hex, sext — six
- nona — nine
- oct — eight