millionth

/ˈmɪljənθ/adjective, noun

millionth is spelled M-I-L-L-I-O-N-T-H: 9 letters and 2 syllables. It appears about once in every 2 million words in written English, the 36,176th most frequent word form (wordfreq, 2021 data). As an adjective, millionth means “The ordinal form of the number one million” (English Wiktionary, September 2026).

How many letters and syllables are in millionth?

Letters	9: M-I-L-L-I-O-N-T-H
Syllables	2 (from its American pronunciation)
In writing	about once in every 2 million words; the 36,176th most frequent word form
Wrong spellings searched	none measured in search

Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation and the CMU Pronouncing Dictionary; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).

How common is millionth?

Millionth appears about once in every 2 million words in written English, the 36,176th most frequent word form in the list.

millionth0.0010.010.11101001,00010,000

rarerper million words of written Englishmore common

Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).

How do you pronounce millionth?

/ˈmɪljənθ/
/ˈmɪli.ənθ/

Millionth has 2 syllables (counted from its American pronunciation in the CMU Pronouncing Dictionary).

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Vealhurl-millionth.wav, Wikimedia Commons (author and licence on each file's page).

Forms of millionth

millionths plural

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

What does millionth mean?

The meanings the English Wiktionary records, quoted as written there (source below).

adjective

1
The ordinal form of the number one million.

noun

1
The person or thing in the millionth position.
2
One of a million equal parts of a whole. Term ppm (parts per million) is also used.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

Millionth in Spanish, French, German and Portuguese

Language	Words
French	millionième, 1.000.000ᵉ (millionth)
German	millionstel, milliontel (millionth)
Portuguese	milionésimo, 1.000.000º (millionth)
Spanish	millonésimo (person or thing in the millionth position)

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.