Inflammation of the lacrimal gland (the gland that produces tears).
From Greek 'dakryon' (tear) + 'aden' (gland) + '-itis' (inflammation). The '-itis' suffix comes from Greek and is standard medical terminology for inflammation of any body part.
When your tear gland gets infected and swells up, that's dacryadenitis—it's like your eye's defense system goes into overdrive and causes more problems!
Complete word intelligence in one call. Free tier — 50 lookups/day.