ọọdunrun

Etymology
From, "One hundred subtracted from four hundred.".

Numeral

 * 1) three hundred
 * 2)  three hundredth, number 300

Usage notes
Since this number does not have a m-based form, similar to other multiples of ten afterwards, if it's describing a total number of items, it comes before the noun.

However, if it is describing an ordinal sequence, it comes after the noun.