nineteenths

Nineteenths is the plural form of nineteenth and also a way to refer to the fractional unit 1/19. The term appears in two related senses: as an ordinal (the nineteenth) and as a fraction (one nineteenth).

As an ordinal, nineteenth designates the position after the eighteenth and before the twentieth. It is used to label dates, centuries, or items in a ranked sequence, as in the nineteenth century or the nineteenth item in a list. In everyday English, the standard ordinal is spelled nineteenth, while nineteenths is used when referring to multiple fractional parts rather than the ordinal itself.

As a fraction, nineteen is used as the denominator, yielding the fraction 1/19. The decimal equivalent is approximately 0.0526315789, and the percentage is about 5.2631%. In mathematical contexts, any multiple of this unit can be described as k/19, where k is an integer.

Usage notes and examples include both mathematical and descriptive contexts. In measurements, phrases like “one nineteenth of an inch” are valid but uncommon; more frequent fractions for practical measurement are tenths, hundredths, or fractions with more convenient denominators. In writing, nineteenths will appear primarily in technical or mathematical discussions when the specific unit 1/19 is being referenced, or when counting multiple such parts.

See also: nineteenth, nineteenth century, nineteenth amendment, fractions, decimal representation.