sedecimal

adj

"sedecimal" is a 9-letter English headword indexed on PlainSpell.

The verdict

“sedecimal” is uncommon English (outside the top frequency list), classed as an adjective. The kind of spelling people second-guess.

Unranked
below top-frequency English
9
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Pertaining to sixteen.

Corpus desk

Index EN-sedecimal · sedecimal · English

sedecimal · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-LONG 9 letters
  • VOW-4 4 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "S" thin
  • PHOTO-UNK Peer pending

Read with this headword: Spelling guide for this pattern

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Key facts for sedecimal
PropertyValue
Headwordsedecimal
LanguageEnglish
Part of speechAdjective
Letters9
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “sedecimal” in English

sedecimalranks outside the top 100,000 English headwords, in the long tail of specialist, archaic, or seldom-used vocabulary, exactly the territory where a reader stops mid-sentence to double-check spelling.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

sedecimal is uncommon English outside the top frequency list, classed as anadjective. Rarity is why readers land here mid-draft. 2 senses are on record.

The misspelling generator found no plausible variants for sedecimal, since its letter pattern doesn't lend itself to common typo substitutions. It is not paired with a close-neighbour confusable in our dataset, suggesting its spelling stands apart enough that readers rarely confuse it with something else.

Etymologically, the entry records: From Latin sēdecim (“sixteen”) + -al, after decimal. The correct English form is sedecimal, spelled S-E-D-E-C-I-M-A-L.

Definition

  1. 1
    Pertaining to sixteen.
  2. 2
    Synonym of hexadecimal.

Etymology

From Latin sēdecim (“sixteen”) + -al, after decimal.

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "sedecimal"?
"sedecimal" is spelled S-E-D-E-C-I-M-A-L.
What does "sedecimal" mean?
As an adjective, "sedecimal" means: Pertaining to sixteen.
What is the origin of the word "sedecimal"?
From Latin sēdecim (“sixteen”) + -al, after decimal. See the full etymology section above for more details.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list