What does thirteen mean?
Thirteen is the English cardinal numeral for the quantity 13, the sum of ten and three. It normally appears before a counted noun, as in “thirteen people,” and can also stand on its own in arithmetic statements, ages, scores, and dates. In formal prose it is a precise, neutral unit of number, not an ornate alternative to “13.” As a noun, “thirteen” names the number itself, while in phrases such as “thirteen of us arrived” it functions as a pronoun. The number has a superstitious association with ill fortune, especially in the expression “Friday the 13th,” but most uses of the word are ordinary and carry no negative meaning. Thirteen also belongs to the English “teen” family of numerals, whose names historically combined a higher unit with the ending -teen. The word is used in both British and American English, with the principal regional difference being whether the first vowel is pronounced with a rhotic sound. Because it is short, exact, and easy to recognize, thirteen is especially useful when counting people, objects, years, or points.
cardinal numeralThe cardinal number equal to the sum of ten and three; the number 13.
- The cardinal number 13, representing the quantity ten plus three in contexts involving age, score, counting, or other numerical measurement.
"The old lighthouse had weathered thirteen fierce winters without losing its light."
"The old lighthouse had weathered thirteen fierce winters without losing its light."
"Thirteen of the guests had already left when the storm forced the others indoors."
Friday the 13th turns a simple count into one of modern culture’s most recognizable bad-luck symbols.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does thirteen come from?
Thirteen descends from Old English þreotene and developed through Middle English forms such as thirtēne before reaching its modern spelling. It belongs to an inherited Germanic numeral system and ultimately traces to the same Indo-European numeral root represented in English by three, thirty, and thrice; triple reached English through Latin from the same ancient root. Close language relatives include Dutch dertien and Old Norse þrettán.
Related word forms
How thirteen is actually used
Neutral in register and ordinarily written as one word. It can modify a noun, serve as a subject or object, or stand as a pronoun in a construction such as “thirteen of us.”
Easily confused with thirteen
Thirteen is 10 plus 3, whereas thirty is 3 times 10.