interstitium.
An interstitial space within a tissue or organ.
Meaning & usage
An interstitial space within a tissue or organ.
Specifically the tissue between the pulmonary alveoli and the bloodstream.
A state between systems or spaces.
An 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).
Where this word comes from
From Latin interstitium, from inter (“between”) + sistō (“to stand, place”).
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.