interstitium
/ˌɪntɚˈstɪʃi.əm/
"interstitium" is a 12-letter English headword indexed on PlainSpell.
The verdict
“interstitium” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 12
- letters
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - An interstitial space within a tissue or organ.
Corpus desk
Index EN-interstitium · interstitium · English
interstitium · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-MEGA 12 letters
- VOW-5 5 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-THIN "I" 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.
| Property | Value |
|---|---|
| Headword | interstitium |
| Language | English |
| Part of speech | Noun |
| IPA | /ˌɪntɚˈstɪʃi.əm/ |
| Letters | 12 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “interstitium” in English
Rare enough to double-check
interstitium is uncommon English outside the top frequency list, classed as anoun, transcribed /ˌɪntɚˈstɪʃi.əm/. Rarity is why readers land here mid-draft. 4 senses are on record.
No misspelling variants are generated for interstitium in our index, since its letter pattern doesn't lend itself to common typo substitutions. No confusable counterpart is on file for this word, suggesting its spelling stands apart enough that readers rarely confuse it with something else.
Etymologically, the entry records: From Latin interstitium, from inter (“between”) + sistō (“to stand, place”). The correct English form is interstitium, spelled I-N-T-E-R-S-T-I-T-I-U-M.
Definition
- 1An interstitial space within a tissue or organ.
- 2Specifically the tissue between the pulmonary alveoli and the bloodstream.
- 3A state between systems or spaces.
- 4An interstice, the interval of time required by the Roman Catholic Church between the attainment of different degrees of an order (pluralised as interstitia for the overall policy, which is also occasionally spelled instertitia).
Etymology
From Latin interstitium, from inter (“between”) + sistō (“to stand, place”).
This word in other languages
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.