The embryo-forming portion of an egg with discoidal cleavage usually appearing as a small disc on the upper surface of the yolk mass.
compact disc read-only memory (s) (noun)
1. A compact disk that is used with a computer (rather than with an audio system).
2. A large amount of digital information that can be stored and accessed, but it cannot be altered by the user.
3. An optical disk that is physically the same as an audio CD, but contains computer data.
"Storage capacity is about 680 megabytes. CD-ROMs are interchangeable between different types of computers."
Compact Disc Rewritable storage; CD-RW
A rewritable version of a CD-ROM.
A CD-RW drive can write about 650 megabytes of data to CD-RW media an unlimited number of times.
Compact Disc-Recordable; CD-R
A recordable CD-ROM which can be read by normal CD-ROM drives; however, the data can only be recorded once onto a CD-R, and cannot be changed.
disc, disk (noun)
1. A thin, flat, circular object or plate.
2. The disk used in a disc brake.
3. A disk used on a disk harrow for agricultural purposes.
4. A magnetic disk; such as, a floppy disk or hard disk; the data stored on such a disk: "The instructions suggested that we read the disk that came with the manual."
5. A round, flattened, plate-like structure in an animal; such as, an intervertebral disk.
6. In botany, the enlarged area bearing numerous tiny flowers, as in the flower head of composite plants; such as, the daisy. Also called a discus.
7. In computer science, a magnetic disk; such as, a floppy disk or hard disk.
8. An optical disk, especially a compact disk.
9. A circular grid in a phototypesetting machine.
disc, disk; discing, disking (verb)
1. To work (soil) with a disk harrow.
2. To make (a recording) on a phonograph record.
A reference to the intervertebral disk (located between vertebrae).
1. Flat and rounded in shape; discoid.
2. Having a round or oval shape like a disc.
Shaped like a disc or disk.
discopathy (s) (noun)
, discopathies (pl)
A disease of a disk, especially of an invertebral disk: Gary had pains in his back and his doctor described it as being a case of discopathy, an illness of a fibrocartilaginous disk situated between the vertebrae of his backbone.
An athletic competition in which a disc-shaped object is thrown as far as possible.
A weighted disk thrown in track-and-field competitions by an athlete who spins with outstretched arms to launch it from the flat of his or her hand. The ancient Greek Olympic games included the throwing of a bronze discus.
diskarthrosis (s) (noun)
, diskarthroses (pl)
A degenerative disease of the spine that involves the intervertebral disk: Jan's uncle Alfred was suffering from a form of diskarthrosis which involved the pathology, or disease, of one of the disks lying between the joints in his back.
The excision of an intervertebral disk (between two vetebrae).
An inflammation of an intervertebral disk.
A roentgenogram (X-ray) of an intervertebral disk into which radio-opaque contrast medium had been injected via direct needle puncture.