Novemdecillion means: A very large but unspecified number (of).. There is no real cause for parental concern; it is descriptive vocabulary rather than risky behaviour. If your teen uses it, context will usually make the intent clear. A short, curious question about where they heard it is usually all that is needed to know whether to follow up.
novemdecillion
(colloquial, hyperbole) A very large but unspecified number (of).
Definitions
UK
#1·Apr 27, 2026UK
(colloquial, hyperbole) A very large but unspecified number (of).
For parents
Novemdecillion means: A very large but unspecified number (of).. There is no real cause for parental concern; it is descriptive vocabulary rather than risky behaviour. If your teen uses it, context will usually make the intent clear. A short, curious question about where they heard it is usually all that is needed to know whether to follow up.
For ESL learners
novemdecillion means: A very large but unspecified number (of).. Register: neutral, standard English. A common learner mistake is using the word in a register it does not fit, or assuming a single global meaning; native speakers immediately notice when slang appears in formal contexts, so always check the surrounding register before producing it yourself. A formal-English equivalent (a synonym or descriptive phrase) is usually safer in writing. When in doubt, paraphrase rather than reuse the slang form.
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UK
#2·Apr 27, 2026UK
(US, modern British & Australian, short scale, rare) 1060.
It is one chance in a novemdecillion. For those who like to be precise, that exact statistic is one chance in 1,606,937,974,174,171,729,761,809,705,564,167,968,221,676,069,604,401,795,301,376.
Origin: From ; compare tredecillion, quattuordecillion, etc. Origin information sourced from Wiktionary contributors (CC BY-SA 4.0).
Cluster: general
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UK
#3·Apr 27, 2026UK
(dated, British & Australian, long scale, rare) 10114.
For an extreme example, see US Patent No. 5,422,351 (filed June 21, 1991). This particular patent includes a structural formula in claim 1 that encompasses at least one novemdecillion (10r, or one followed by sixty zeroes) chemical compo…
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For specific readers
Why is this section here?
Slang is read by different audiences for very different reasons. The For parents view re-explains the term in plain, non-judgemental language so a caregiver can understand what their child means without needing the surrounding subculture. The For English learners view focuses on register (when it's safe to use), formal alternatives, and common mistakes — what a textbook won't teach you.
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UK
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🇦🇺About Australian & NZ slang slang
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Other words near "novemdecillion" (N)
noughtiesnoughts and crossesnoustNovaNovahNovaleenovemvigintillionnovideonowhere incomenowmunnow-nowno word of a lie
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(colloquial, hyperbole) An unspecified very large number.
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(hyperbole) An unspecified very large number.
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(colloquial, hyperbole) An unspecified very large number.
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(figuratively, slang, hyperbole) Any very large number, exceeding normal description.
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(slang, hyperbole) An unspecified large number.