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Definition of thirteenth

thirteenth

/θɜːrˈtiːnθ/
thir · teenth
Plural:thirteenths
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thirteenth Lexical Profile

thirteenth Game Scores & Validity

• adjective

1

Constituting number thirteen in a sequence; coming immediately after the twelfth in order, position, or time.

Example

"The library is located on the thirteenth floor of the main academic building."

2

Each of thirteen equal parts into which a whole is or may be divided.

Example

"Each partner received a thirteenth share of the annual profits."

Synonyms
View all synonyms for thirteenth

• noun

1

The person or thing in a sequence or group that corresponds to the number thirteen, or the thirteenth day of a month.

Example

"The committee scheduled the next review meeting for the thirteenth of October."

2

One of thirteen equal parts into which a whole is divided; a fraction equal to 1/13.

Example

"Roughly one thirteenth of the total budget was allocated to laboratory maintenance."

3

In music, an interval spanning an octave and a sixth, or the thirteenth note of a diatonic scale.

Example

"The jazz pianist enriched the harmony by adding a flat thirteenth to the dominant chord."

Synonyms
View all synonyms for thirteenth

• Rhymes for thirteenth

• Nearby Words

thirstiness
thirsty
thirteen
thirteenth
thirties
thirtieth
thirty

Word Origin & Etymology

From Middle English threttethe, altered by analogy with thirteen, from Old English threoteotha, formed from three, ten, and the ordinal suffix -th.

Cite this Entry

Wordmom. (2026). Definition of Thirteenth. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/thirteenth
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