disk
UK: dɪsk | US: dɪsk
n. a flat, thin, round object (e.g., a CD or hard disk)
n. (anatomy) a structure resembling a flat circular plate (e.g., spinal disk)
n. (astronomy) the apparent circular shape of celestial bodies (e.g., the sun's disk)
The word "disk" originates from the Latin "discus," meaning a flat circular object, borrowed from Greek "diskos" (a quoit or round plate). The spelling evolved in Late Latin to "discus," then entered Old French as "disque," and later Middle English as "disk" or "disc." The "k" variant became dominant in American English, while "disc" is more common in British English. The root "dis-" reflects the flat, circular shape, preserved across its anatomical, technological, and astronomical uses.
She inserted the disk into the computer to install the software.
The MRI revealed a herniated disk in his spine.
The full moon appeared as a bright silver disk in the night sky.
Ancient coins were often small metal disks with engraved designs.
The hard disk stores all the data for the operating system.