1. A chronic bacterial infection caused by Actinomyces species, typically affecting the jaw, lungs, or abdomen, characterized by the formation of abscesses and draining sinuses.
Usage: medical term; uncountable noun

Examples

• The patient was diagnosed with actinomycosis after presenting with a swollen jaw and chronic drainage.
• Actinomycosis is often treated with prolonged antibiotic therapy.
• The infection can spread to the lungs if left untreated.
• Dental procedures and poor oral hygiene may increase the risk of actinomycosis.
• Histological examination revealed the characteristic sulfur granules associated with actinomycosis.