senescence

/sɪˈnɛ.səns/

//sɪˈnɛ.səns// noun

By · According to Wiktionary data (CC BY-SA) ·

"senescence" is a 10-letter English headword indexed on PlainSpell.

The verdict

“senescence” is uncommon English (frequency #52,623 among 6,566 “S” headwords), classed as a noun. The kind of spelling people second-guess.

#52,623
frequency rank, English
6,566
“S” headwords

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The state or process of ageing, especially in humans; old age.

Corpus desk

Index EN-senescence · senescence · English

senescence · rank #52,623 · 0 variants · 0 confusables

  • FREQ-RARE #52,623
  • LEN-MEGA 10 letters
  • VOW-4 4 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-DENSE 6,566
  • PHOTO-FINISH Selene

Nearest frequency peer: Selene (-1 rank slots)

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.

Long-tail ranks near “senescence”

Sparse band: bars invert rank so rarer forms read shorter

corpus weight

What this shows Long-tail view: where “senescence” sits against similarly uncommon English ranks.

Source FrequencyWords open word-frequency list As of September 3, 2026
Key facts for senescence
PropertyValue
Headwordsenescence
LanguageEnglish
Part of speechNoun
IPA/sɪˈnɛ.səns/
Letters10
Frequency rank#52,623
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “senescence” in English

Word frequency stretches from the small set of words we reach for constantly (left) out to the long tail barely used once in a while (right).senescencefalls in this rarity band:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Rare peers in the same band: “Selene” (#52,622), “separable” (#52,624), “sheared” (#52,625). Among 6,566 “S” headwords, “senescence” is #52,623. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

senescence is uncommon English at frequency #52,623 among 6,566 “S” headwords, classed as anoun, transcribed /sɪˈnɛ.səns/. Rarity is why readers land here mid-draft. 5 senses are on record.

Our edit-distance generator produced no likely misspellings for senescence, since its letter sequence doesn't invite the usual edit-distance slips. This entry stands alone in our confusable dataset, which tends to mean the word is visually distinctive enough to stand on its own.

Etymologically, the entry records: From senescent + -ence. The correct English form is senescence, spelled S-E-N-E-S-C-E-N-C-E.

Definition

  1. 1
    The state or process of ageing, especially in humans; old age.
  2. 2
    Ceasing to divide by mitosis because of shortening of telomeres or excessive DNA damage.
  3. 3
    Old age; accumulated damage to macromolecules, cells, tissues and organs with the passage of time.
  4. 4
    Fruit senescence, leading to ripening of fruit.
  5. 5
    Condition when the cell ceases to divide.

Recorded use

Wiktionary examples

These source excerpts show how senescence appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. Organized shuffleboard has always filled me with dread. Everything about it suggests infirm senescence and death: it’s like it’s a game played on the skin of a void and the rasp of the sliding puck is the sound of that skin getting abraded away bit by bit.
  2. Over the next 150 years the known age of the Earth expanded a millionfold and lost worlds of the past were found to have overflowed with species now gone. The chain stretched, aged, and eventually succumbed to senescence.

Etymology

From senescent + -ence.

This word in other languages

senectud(Español)Alterungsprozess(Deutsch)

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "senescence"?
"senescence" is spelled S-E-N-E-S-C-E-N-C-E. The IPA pronunciation is /sɪˈnɛ.səns/.
What does "senescence" mean?
As a noun, "senescence" means: The state or process of ageing, especially in humans; old age.
How do you pronounce "senescence"?
The IPA (International Phonetic Alphabet) transcription for "senescence" is /sɪˈnɛ.səns/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "senescence"?
From senescent + -ence. 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.

Similar English words by spelling shape

Same letter count and similar misspelling depth for "senescence", not the corpus desk frequency band.

Same letter count

Frequency-ranked English headwords with 10 letters (nearest by frequency rank).

statically#52,647strictures#52,653suboptimal#52,656unbuttoned#52,692

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

Source: FrequencyWords open word-frequency list