micro- — small, tiny, millionth (affix)

microphone B2

/ˈmaɪ.kɹəˌfoʊn/ A device that turns sound into an electrical signal so it can be recorded or made louder. M S

microwave B2

/ˈmaɪkɹəˌweɪv/ An oven that cooks or heats food quickly using electromagnetic waves. M S

microscope B2

/ˈmaɪ.kɹəˌskoʊp/ An instrument that makes very small objects look much bigger so they can be studied. M S

microbe B2

/ˈmaɪkɹoʊb/ A tiny living thing too small to see without a microscope, such as a bacterium that can cause disease. M S