abdominal actinomycosis: a serious form of actinomycosis that affects the abdomen
actinomycosis: disease of cattle that can be transmitted to humans; results from infection with actinomycetes; characterized by hard swellings that exude pus through long sinuses
weakly interacting massive particle: a hypothetical subatomic particle of large mass that interacts weakly with ordinary matter through gravitation; postulated as a constituent of the dark matter of the universe