What is the difference between dyadic expansion and binary expansion?

I have seen that both dyadic expansion and binary expansion have been mentioned in constructing a sequence of i.i.d. Bernoulli random variables defined from $[0,1]$ to $\{0,1\}$.

I tried to look up the definition of dyadic expansion, but couldn't find it. So I was wondering what differences and relations are between dyadic expansion and binary expansion?

Thanks and regards!

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Greek vs. Latin? In mathematics we sometimes say dyadic expansion instead of binary expansion. So you can exchange one for the other. Also each of the words dyadic and binary has other uses, but it may not be possible to exchange them in these other uses. –  GEdgar Feb 3 '13 at 14:05
@GEdgar: Thanks! I know neither Greek nor Latin. –  Tim Feb 3 '13 at 14:07