twenty-eighth

[ twen-tee-eytth, -eyth, twuhn- ]
/ ˈtwɛn tiˈeɪtθ, -ˈeɪθ, ˈtwʌn- /

adjective

next after the twenty-seventh; being the ordinal number for 28.
being one of 28 equal parts.

noun

a twenty-eighth part, especially of one (1/28).
the twenty-eighth member of a series.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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