Seventeenth meaning

sĕv'ən-tēnth'
The ordinal number matching the number 17 in a series.
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One of 17 equal parts.
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Preceded by sixteen others in a series; 17th.
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Designating any of the seventeen equal parts of something.
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The one following the sixteenth.
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Any of the seventeen equal parts of something;117
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In the seventeenth place, rank, group, etc.
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(fractional) One of seventeen equal parts of a whole.

A seventeeth of 340 is 20.

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(music) An interval of two octaves and a third.
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