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Definition of diaplex
diaplex
/ˈdaɪ.əˌplɛks/
di · a · plex
Plural:diaplexes
•Adjective:diaplexal
diaplex Lexical Profile
CEFR
C2
Grade
13
Tier
3
Usage
Rare
• noun
1
The choroid plexus of the third ventricle of the brain, an intricate network of blood vessels and cells that produces cerebrospinal fluid.
Example
"During the neuroanatomical dissection, the students carefully isolated the diaplex to study its role in cerebrospinal fluid circulation."
Synonyms
View all synonyms for diaplexWord Nuance & Usage
An archaic anatomical term; modern medical literature typically prefers the descriptive phrase 'choroid plexus of the third ventricle'.
Word Origin & Etymology
Coined in the late 19th century by American comparative anatomist Burt G. Wilder, formed by combining 'dia-' (referring to the diencephalon) and '-plex' (a contraction of plexus, from Latin 'plexus' meaning braid or network).
Cite this Entry
Wordmom. (2026). Definition of Diaplex. In Wordmom Dictionary. Retrieved Oct 16, 2026, from https://wordmom.com/dictionary/diaplex