tenth

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tenth

1. coming after the ninth in numbering or counting order, position, time, etc.; being the ordinal number of ten: often written 10th
2. 
a. one of 10 approximately equal parts of something
b. (as modifier): a tenth part
3. one of 10 equal divisions of a particular measurement, etc.
4. the fraction equal to one divided by ten (1/10)
5. Music
a. an interval of one octave plus a third
b. one of two notes constituting such an interval in relation to the other