Encephalocele

Part of speech: noun

Definitions

1. A congenital defect characterized by a sac-like protrusion of brain tissue and membranes through an opening in the skull ; a neurological malformation involving herniation of intracranial contents outside the cranial cavity ; a birth anomaly where brain matter and surrounding membranes extend beyond the skull due to a developmental gap
2. A rare neural tube defect marked by the outward bulging of brain tissue through a cranial bone breach ; a condition involving protrusion of cerebrospinal structures through skull defects present at birth ; a structural brain anomaly resulting in brain parts and membranes appearing outside the cranial vault due to improper skull formation
3. An abnormality at birth presenting as brain and meninges protruding through an incompletely formed skull ; a defect in cranial development causing brain tissue to herniate beyond the skull surface ; a congenital cranial protrusion where intracranial contents bulge externally through a bone defect in the head

Etymology: "Encephalocele" is a modern medical coinage built from two Greek elements. The first, "enkephalon", means "brain" and is itself a compound of "en" ("in") and "kephalē" ("head"), so it literally means "what is inside the head." The second, "kēlē", meant "tumour" or "swelling" in Greek and became the standard suffix for hernias and protrusions, as in "hernia" itself being a related pattern in medical terms. Put together, the word describes exactly what it sounds like: a swelling of the brain. Its formation follows the same scheme as other clinical terms built on the -cele suffix, which doctors and anatomists used to name a range of herniations. Because the word was assembled from classical parts rather than inherited from ancient texts, it reflects the scientific habit of naming conditions in a shared Greek vocabulary so that physicians across languages could read the same label.

Synonyms: brain hernia