The word "ninetieth" is spelled with ten letters, four of which are vowels. It is pronounced as /ˈnaɪn.ti.əθ/ in IPA phonetic transcription. The word is formed by adding the suffix "-th" to the ordinal number "ninety." It represents the position or rank of something in a series of ninety items. The spelling of the word follows the regular English spelling rules for ordinal numbers above twentieth, where the "-ty" suffix is followed by the "-th" suffix.
The term "ninetieth" is an ordinal numeral and an adjective that denotes the numerical position or ranking of something in a sequence, specifically, the number 90 in a series. It is derived from the cardinal number "ninety" and the suffix "-th," which is commonly used to form ordinal numbers.
In numerical terms, "ninetieth" indicates that the item it describes is in the position following the eighty-ninth and preceding the ninety-first in a series. For example, if a person is celebrating their ninetieth birthday, it means they have completed 89 years of life and are now entering their ninetieth year.
Furthermore, "ninetieth" may also be used as a noun, representing the thing or person occupying the ninetieth position in a series. In this context, it refers to an item or individual that is ranked 90th, falling near the end of a list or enumeration.
Overall, "ninetieth" serves as a numerical indicator, encapsulating the counting or ordering of things in a sequence, particularly associated with the number 90.
The ordinal of ninety.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
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The word "ninetieth" is derived from the combination of two words: "nine" and "-tieth".
The term "nine" originates from the Old English word "nigon", which can be traced back to the Proto-Germanic word "niun", meaning "nine". This root is shared among several Germanic languages.
The suffix "-tieth" comes from the Old English word "-teoða", which indicates ordinal numbers. This suffix goes back to the Proto-Germanic word "-tōða". It is related to the Latin "-decimus", which also denotes "tenth" or ordinal numbers.
By combining "nine" with "-tieth", the word "ninetieth" is formed, representing the ordinal number that follows the number eighty-nine.