Did you know?

Click any word in a definition or example to find the entry for that word

Computer memory and data storage devices

blu-ray

a computer disc that can store large amounts of information and that produces very high quality pictures and sounds, used especially for computer games and /movies

boot disk

noun

a disk that contains a program for starting a computer and the operating system software

buffer

noun

an area in a computer’s memory where information is kept temporarily when you are sending it from one system or program to another

cache

noun

an area of a computer’s memory for storing information that is regularly needed

cache memory

noun

an area of a computer’s memory for storing information that is regularly needed

CD

noun

compact disk: a small round piece of hard plastic with sound recorded on it or computer information stored on it

CDE

noun

compact disc erasable: a CD that can have its information removed and something else recorded onto it

CD-R

noun

compact disc recordable: an empty CD you can use only once to record music or information from a computer

CD-ROM

noun

compact disk read-only memory: a CD that stores large amounts of information for use by a computer

CD-RW

noun

compact disc rewritable: a CD you can use as many times as you want to record music or information from a computer

CD-video

noun

a CD used for playing video pictures

compact disc

noun

a cd

contact card

noun

a card containing electronic information that you can read by touching the card with a special piece of equipment

contactless card

noun

a card containing electronic information that can be read from a distance with special equipment that uses radio waves

disc

another spelling of disk

disk

noun

a flat circular object on which information from a computer can be stored. Disks include hard disks, floppy disks, CDs, and DVDs

disk

noun

a cd or dvd

diskette

noun

a floppy disk

double-density

adjective

a double-density disk holds twice the amount of information as a standard disk

DVD-A

noun

a music DVD that contains more songs than a CD and has better sound quality

DVD-R

noun

a DVD that you can use only once to record information, especially images

DVD-ROM

noun

a computer DVD that can hold a lot more information than a CD

DVD-RW

noun

a DVD that you can use as many times as you want to record information, especially images

EPROM

noun

erasable-programmable read-only memory: computer memory that can be changed by a user to correct a problem in the program or to add to what the program can do

flash drive

noun

a small plastic disk drive that stores information and that you can carry around with you. You connect the flash drive to a computer when you want to use the information.

flash memory

noun

a type of computer memory that does not lose information when electrical power stops being available and from which you can erase (=get rid of) information and then program it again

floppy disk

noun

a small square plastic object that you use for copying information from a computer. A floppy disk is often simply called a floppy. The part of the computer where you put the floppy disk is called a disk drive.

hard disk

noun

the part inside a computer that stores the information it needs to work

hard drive

noun

a hard disk

mailbox

noun

a part of a computer’s memory where e-mail is stored

medium

noun

a substance or an object on which computer information is stored or printed

memory

noun

the part of a computer in which information, instructions, and programs are stored

memory

noun

the size of this part of a computer

memory bank

noun

the part of a computer where information is stored

Memory Stick

a small disk drive that can store information for use in electronic equipment and that you carry around with you

optical disk

noun

a thin flat round piece of plastic that stores information such as music or written words that can be read using a laser (=powerful narrow light). Optical disks include cd-roms and laserdisks.

photo CD

noun

a CD containing photographs that you can look at on a computer or television screen

RAM

noun

random access memory: the part of a computer that programs are put into while you are using them

random access memory

noun

ram

read-only memory

noun

rom

rewritable

adjective

a rewritable disk can be written on many times

ROM

noun

read-only memory: computer memory that is permanent and cannot be changed. Computer memory where you can save and change information is called RAM.

root directory

noun

the main directory (=place where files are stored) that contains all the other directories in a system of organizing information

SIMM

noun

single inline memory module: a part that is attached to the motherboard of a computer to add memory

space

noun

the area that is available on a computer for storing information

spool

noun

a part of a computer’s memory where information is kept for a short period

stack

noun

a system for storing information on a computer

storage

noun

the ability of a computer to store information, or the process of doing this

subdirectory

noun

one small area in a computer where information is stored, or a list of the files and programs stored there. A subdirectory is in a directory, often with other subdirectories

system disk

noun

a disk that holds the system software

virtual disk

noun

computer memory that is used as a disk to store information

virtual memory

noun

space on a computer’s hard drive that the software can use as a temporary place to store information

thumb drive

noun

a small disk drive that can store information from a computer and that you can carry around with you

cyberloafing

using the Internet where you work, during working hours, for activities which are not work-related

BuzzWord Article

Word of the Day

neutron

the part of the nucleus of an atom that has no electrical charge

Open Dictionary

show a bit of ankle

… to reveal a small part of your intentions in order to attract support, without actually committing yourself to doing anything

add a word

Blog

A must for anyone with an interest in the changing face of language. The Macmillan Dictionary blog explores English as it is spoken around the world today.

global English and language change from our blog