the state or process of becoming swollen or filled to capacity, especially with blood or other fluid.
From engorge plus the noun suffix -ment (from Old French and Latin -mentum). This nominalization allows the action of filling to fullness to be discussed as an abstract concept or medical condition.
In medical terminology, engorgement is surprisingly important—breast engorgement is a common postpartum issue, nasal engorgement causes congestion, and vascular engorgement is how some animals (like certain spiders) control their movement since they don't have muscles everywhere.
Complete word intelligence in one call. Free tier — 50 lookups/day.