>>Similarly one hundred hundred is a myriad. A myriad myriad, or one hundred million, was left as the largest named number by the Ancient Greeks and is also the largest named number in the Bible.
A myriad is primarily a singular cardinal number; just as the "thousand" in "four thousand" is singular (one does not write "four thousands people") the word myriad is used in the same way: "there are four myriad people outside". When used as a noun, meaning "a large number", it follows the same rules as that phrase. However, that is not the case originally in Greek, where there is plural.<<
http://en.wikipedia.org/wiki/Myriad
I want to use it in a sentence or two.
Obama spoke to two myriad students at Penn State the other day. As Hillary addressed a myriad of vendors to whom she owed money. Her campaign is three hundred myriad in debt.