What does membranous mean?
Membranous is an adjective meaning relating to, consisting of, or resembling a membrane. A membrane is a thin, flexible layer of tissue that separates or encloses parts of an organism, or forms part of a larger structure. In anatomical and biological writing, "membranous" often emphasizes that something is made of delicate layers rather than solid tissue. A familiar example is the membranous labyrinth of the inner ear, a fluid-filled system involved in hearing and balance. The word can also describe an object or covering that resembles a thin membrane in appearance or flexibility. It is a technical term in many contexts, so writers may choose "membrane-like" or "membranic" when addressing a general audience.
adjectiveRelating to, consisting of, or resembling a membrane. In anatomy, it describes structures that are composed chiefly of thin layers of tissue rather than solid or muscular material.
- Relating to or consisting of a membrane.
- Resembling a membrane in appearance or structure.
"The inner ear contains a delicate membranous system filled with fluid."
"The doctor examined the membranous tissue surrounding the organ."
"The flexible cover is membranous rather than rigid."
The inner ear's membranous labyrinth is a tiny fluid-filled system that turns pressure changes into nerve signals for hearing and balance.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does membranous come from?
The word comes from the Latin "membrana," meaning a thin layer or covering, which is the source of English "membrane." The adjective developed through the related Latin form "membranosus," meaning resembling or consisting of a membrane. Its cognates include "membranaceous," a formal adjective with a similar meaning, and "membranule," a term for a small membrane.
Related word forms
How membranous is actually used
The adjective is most common in anatomy and biology, especially when describing thin, layered, flexible, or membrane-forming structures. It is more technical than general descriptions such as "membrane-like."