Tenth Definition

tĕnth

noun

The one following the ninth.

Webster's New World

The ordinal number matching the number ten in a series.

American Heritage

Any of the ten equal parts of something;¹₁₀

Webster's New World

A tenth of a gallon.

Webster's New World

(music) The interval between any tone and the tone represented on the tenth degree of the staff above it, as between one of the scale and three of the octave above; the octave of the third.

Wiktionary

Synonyms:

Synonyms:
ten percent
tenth part
one-tenth

adjective

Preceded by nine others in a series; 10th.

Webster's New World

Designating any of the ten equal parts of something.

Webster's New World

The ordinal form of the number ten.

Wiktionary

Synonyms:

Synonyms:
10th

adverb

In the tenth place, rank, group, etc.

Webster's New World

abbreviation

10th, 10^th; (in names of monarchs and popes) X.

Wiktionary

Other Word Forms of Tenth

Noun

Singular:

tenth

Plural:

tenths

Origin of Tenth

From Middle English. Old English had tēoþa (origin of Modern English tithe), but the force of analogy to the cardinal number "ten" caused Middle English speakers to recreate the regular ordinal and re-insert the nasal consonant.

From Wiktionary
Middle English tenthe alteration of tethe from Old English tēotha tithe

From American Heritage Dictionary of the English Language, 5th Edition