Ninetieth definition
The ordinal number matching the number 90 in a series.
noun
One of 90 equal parts.
noun
Preceded by eighty-nine others in a series; 90th.
adjective
Designating any of the ninety equal parts of something.
adjective
The one following the eighty-ninth.
noun
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Any of the ninety equal parts of something;190
noun
In the ninetieth place, rank, group, etc.
adverb
The person or thing in the ninetieth position.
noun
One of ninety equal parts of a whole.
noun
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Other Word Forms
Noun
Singular:
ninetieth
Plural:
ninetieths