Capsule/ˈkæpsl,ˈkæpsuːl/ Definition 1 of 5Pro Tip 1/3Dosage Form Capsule refers to a specific form of medicine; it's not a liquid or a cream. The doctor prescribed antibiotic capsules for the infection. Pro Tip 2/3Not Chewable Medicine capsules should be swallowed whole, not chewed open. Swallow the capsule with a full glass of water. Pro Tip 3/3Encapsulation A capsule's shell encases its contents to protect them until they're ingested. The gelatin capsule ensures the medicine absorbs properly.