decimeter
decimate
decade
decibel
decimal
decagon
decathlon
decapod
a polygon with ten straight sides and angles
to destroy or reduce a population (of something) by one tenth
an athletic event in which each competitor takes part in ten events
a metric unit of length, equal to one tenth of a meter
a unit of measure for sound meaning "one tenth of a bel"
a period of ten years
a crustacean with 10 legs, such as shrimp, crab, or lobster
a number system based on the number 10 with tenth parts and powers of 10