Environmental Protection. Didymo (Didymosphenia geminata), also known as rock snot, is a non-native invasive microscopic algae (diatom) that can produce large amounts of stalk material to form thick brown mats on stream bottoms. Didymo threatens aquatic habitat, biodiversity and recreational opportunities.
peripheral device - (computer science) electronic equipment connected by cable to the CPU of a computer; disk drives and printers are important peripherals.
switch to new thesaurus peripheral peripheral device computer computing device computing machine data processor electronic computer information processing system a machine for performing calculations automatically data input device input device a device that can be used to insert data into a computer or other computational device electronic equipment equipment that involves the controlled conduction of electrons especially in a gas or vacuum or semiconductor