blastoderm
germinal disc
blastodisc
germinal area | a layer of cells on the inside of the blastula |
acetate disk
phonograph recording disk | a disk coated with cellulose acetate |
audio CD
audio compact disc | compact discs used to reproduce sound (voice and music) |
| brake disk | a disk or plate that is fixed to the wheel, pressure is applied to it by the brake pads |
CD-R
compact disc recordable
CD-WO
compact disc write-once | a compact disc on which you can write only once and thereafter is read-only memory |
CD-ROM
compact disc read-only memory | a compact disk that is used with a computer (rather than with an audio system), a large amount of digital information can be stored and accessed but it cannot be altered by the user |
compact disk
compact disc
CD | a digitally encoded recording on an optical disk that is smaller than a phonograph record, played back by a laser |
compact-disk burner
CD burner | recording equipment for making compact disks |
disk
disc | a flat circular plate |
| disk access | memory access to the computer disk on which information is stored |
disk brake
disc brake | hydraulic brake in which friction is applied to both sides of a spinning disk by the brake pads |
| disk cache | a cache that stores copies of frequently used disk sectors in random access memory (RAM) so they can be read without accessing the slower disk |
| disk clutch | a friction clutch in which the frictional surfaces are disks |
| disk controller | (computer science) a circuit or chip that translates commands into a form that can control a hard disk drive |
disk drive
disc drive
hard drive
Winchester drive | computer hardware that holds and spins a magnetic or optical disk and reads and writes information on it |
diskette
floppy
floppy disk | a small plastic magnetic disk enclosed in a stiff envelope with a radial slit, used to store data or programs for a microcomputer, floppy disks are noted for their relatively slow speed and small capacity and low price |
disk harrow
disc harrow | a harrow with a series of disks set on edge at an angle |
hard disc
hard disk
fixed disk | a rigid magnetic disk mounted permanently in a drive unit |
magnetic disk
magnetic disc
disk disc | (computer science) a memory device consisting of a flat disk covered with a magnetic coating on which information is stored |
optical disk
optical disc | a disk coated with plastic that can store digital data as tiny pits etched in the surface, is read with a laser that scans the surface |
phonograph record
phonograph recording
record
disk disc platter | sound recording consisting of a disk with a continuous groove, used to reproduce music by rotating while a phonograph needle tracks in the groove |
| RAM disk | (computer science) a virtual drive that is created by setting aside part of the random-access memory to use as if it were a group of sectors, access to a RAM disk is very fast but the data it contains is lost when the system is turned off |
| Rayleigh disk | an acoustic radiometer consisting of a light disk suspended from a quartz thread, when exposed to a progressive sound wave its torque can measure velocity |
| removable disk | a hard disk that can be removed from the disk drive, removal prevents unauthorized use |
circularity
disk shape | the roundness of a -dimensional figure |
intervertebral disc
intervertebral disk | a fibrocartilaginous disc serving as a cushion between all of the vertebrae of the spinal column (except between the first two) |
blind spot
optic disc
optic disk | the point where the optic nerve enters the retina, not sensitive to light |
| disk file | (computer science) a computer file stored on a magnetic disk and identified by a unique label |
DOS
disk operating system | an operating system that is on a disk |
MS-DOS
Microsoft disk operating system | an operating system developed by Bill Gates for personal computers |
| disk error | error resulting from malfunction of a magnetic disk |
disk pack
disc pack | (computer science) a portable pack of magnetic disks used in a disk storage device |
disk space
disc space | (computer science) the space available on a magnetic disk |
disk overhead
overhead | (computer science) the disk space required for information that is not data but is used for location and timing |
disk jockey
disc jockey
dj | a person who announces and plays popular recorded music |
disk
disc
saucer | something with a round shape resembling a flat circular plate, the moon's disk hung in a cloudless sky |
herniated disc
ruptured intervertebral disc
slipped disc | a painful rupture of the fibrocartilage of the disc between spinal vertebrae, occurs most often in the lumbar region |
cervical disc syndrome
cervical root syndrome | an abnormal condition resulting from compression of spinal nerve roots in the neck region, involves neck pains and muscular weakness and paresthesia |
abrasive
abradant
abrasive material | a substance that abrades or wears down |
disk-jockey
disc-jockey
DJ | comment on music to be played, He has a job disk-jockeying on the weekend |
harrow
disk | draw a harrow over (land) |
harsh
abrasive | sharply disagreeable, rigorous, the harsh facts of court delays, an abrasive character |
discoid
discoidal
disklike
disclike
disk-shaped
disc-shaped | having a flat circular shape |
abrasive
scratchy | causing abrasion |