The basic functioning unit of the kidney is called the nephron. The kidneys together comprise greater than 2 million nephrons, and each is capable of forming urine. The nephrons function is to clean the blood of unwanted substances as it flows past.
disk drive. n. Computers. A hardware device that reads data stored on a disk and writes data onto the disk for storage. disk drive. n. (Computer Science) computing the controller and mechanism for reading and writing data on computer disks. See also disk2.
Definition - What does Boot Disk mean? A boot disk is a removable data storage medium used to load and boot an operating system or utility program. Typically, a boot disc is a read-only medium that stores temporary files on a CD-ROM or floppy disc drive. Other boot disk mediums include USB drives, zip drives, and paper tape drives. One of the most common uses of a boot disk is to start the computer when the operating on the internal hard drive does not load.