The quality or state of flowing out; the characteristic of being effluent; the process of emanation or discharge.
From 'effluent' plus '-cy' suffix, creating an abstract noun describing the quality of flowing outward. Extremely rare in modern usage.
This word is so obscure that even word nerds debate whether it's actually a real English word or just a theoretical formation—it exists in older dictionaries but almost never in actual writing.
Complete word intelligence in one call. Free tier — 50 lookups/day.