Memory meaning

mĕmə-rē
Frequency:
The definition of memory is the power of the brain to recall past experiences or information.

An example of memory is someone remembering the date for their wedding anniversary.

noun
15
1
The mental faculty of retaining and recalling past experience.
noun
7
0
All that a person can remember.

It hasn't happened in my memory.

noun
5
0
The act or an instance of remembering; recollection.

Spent the afternoon lost in memory.

noun
3
0
Something that is remembered.

Pleasant childhood memories.

noun
1
0
Advertisement
A person, thing, happening, or act as recalled to mind.
noun
1
0
Commemoration or remembrance.

In memory of his father.

noun
1
0
The mental faculty of retaining and recalling past experience based on the mental processes of learning, retention, recall, and recognition.
noun
1
0
(statistics) The set of past events affecting a given event in a stochastic process.
noun
0
0
The power, act, or process of recalling to mind facts previously learned or past experiences.
noun
0
0
Advertisement
The fact of being remembered; posthumous reputation.
noun
0
0
noun
0
0
Persistent modification of behavior resulting from experience.
noun
0
0
The ability of the immune system to produce a specific secondary response to an antigen that has been previously encountered.
noun
0
0
The capacity of a material, such as plastic or metal, to return to a previous shape or condition.
0
0
Advertisement
The capacity of the immune system to produce a specific immune response to an antigen it has previously encountered.
0
0
Increasingly, the term memory refers to permanent "non-volatile" storage and not the original meaning. The "flash memory" chips used in USB drives and "memory" cards caused this change because they are both permanent storage, not temporary as explained in the following paragraph.The Original DefinitionStarting in the 1960s, memory has meant the computer's temporary workspace, which for decades has been a collection of dynamic RAM (DRAM) chips. A major resource in the computer, memory (RAM) determines the size and number of programs that can be run at the same time, as well as the amount of data that can be processed instantly.To always be clear, avoid using the term memory, and instead use "RAM" for temporary memory and "storage" for permanent memory. RAM capacity in today's computing devices ranges from four to 32GB (gigabytes). Storage goes from 120GB to terabytes (TB). See dynamic RAM, storage vs. memory, USB drive, memory card and flash memory.It All Takes Place in MemoryAll program execution and data processing takes place in memory, often called "main memory." The program's instructions are copied into memory from storage or the network and then extracted into the CPU's control unit circuit for analysis and execution. The instructions direct the computer or mobile device to input, process and output data.Calculate, Compare and CopyAs data are entered into memory, the previous contents of that space are lost. Only in memory can data be processed (calculated, compared and copied). The results are copied from memory to a screen, printer, storage device or the network.Memory Is an Electronic CheckerboardThink of a checkerboard with each square holding one byte of data or instruction. Each square (each byte) has a separate address like a post office box that can be manipulated independently. As a result, the computer can break apart programs into instructions for execution and data records into fields for processing. See byte addressable, early memory and RAM.Computer Memory Does Not RememberOddly enough, memory does not "remember" anything when the power is turned off. So why do they call it memory? Because the first memory did "remember," but today's RAM chips do not. Although there are memory chips that do hold their content permanently (ROMs, EEPROMs, flash memory, etc.), they are used for internal control purposes and data storage, not for processing. To make it even more confusing, it appears that the next generation of memory may again "remember" (see 3D XPoint and future memory chips). See storage vs. memory.The main "remembering" memory in a computer system are the hard drives and solid state drives (SSDs), which are sometimes called "memory devices," which only adds confusion (see storage vs. memory).Memory Can Get Clobbered!Memory is an important resource that cannot be wasted. It must be allocated by the operating system as well as by applications and then released when no longer needed. Errant programs can grab memory and not let go, which results in less and less memory available to other programs. Restarting the computer gives memory a clean slate, which is why rebooting the computer clears up so many problems with applications.In addition, if the operating system has bugs, a malfunctioning application can write into the same memory used by another program, causing unspecified behavior such as the system locking up. If one were able to look into and watch how fast data and instructions are written into and out of memory in the course of a single second, it would become obvious that it is a miracle it works at all.Other terms for the computer's main memory are RAM, primary storage and read/write memory. Earlier terms were core and core storage. See dynamic RAM, static RAM and memory module.
0
0
A device that stores computer data or programs for subsequent retrieval. In the general sense, the term refers to all forms of on-line storage, including hard disk drives and tape drives. In practice, the term generally refers to a computer's fast semiconductor-based main memory, or random access memory (RAM), as distinguished from its secondary storage, such as hard drives.Virtual memory is disk space pretending to be RAM. See also flash memory, RAM, and ROM.
0
0
(uncountable) The ability of an organism to record information about things or events with the facility of recalling them later at will.

Memory is a facility common to all animals.

noun
0
0
A record of a thing or an event stored and available for later use by the organism.

I have no memory of that event.

noun
0
0
Advertisement
(computing) The part of a computer that stores variable executable code or data (RAM) or unalterable executable code or default data (ROM).

This data passes from the CPU to the memory.

noun
0
0
The time within which past events can be or are remembered.

In recent memory; in living memory.

noun
0
0
(of a material) Which returns to its original shape when heated.

Memory metal; memory plastic.

noun
0
0
The fact of being remembered; remembrance.

Dedicated to their parents' memory.

noun
0
1
The period of time covered by the remembrance or recollection of a person or group of persons.

Within the memory of humankind.

noun
0
1
Advertisement
The capacity of a material, such as plastic or metal, to return to a previous shape after deformation.
noun
0
1
(immunology) The ability of the immune system to respond faster and more powerfully to subsequent exposure to an antigen.
noun
0
1
The total of what one remembers.
noun
0
1
The length of time over which remembering extends.

A happening within the memory of those still living.

noun
0
1

Origin of memory

  • Middle English memorie from Anglo-French from Latin memoria from memor mindful (s)mer-1 in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Anglo-Norman memorie, Old French memoire etc., from Latin memoria (“the faculty of remembering, remembrance, memory, a historical account"), from memor (“mindful, remembering"), related to Ancient Greek μνήμη (mneme, “memory") μέρμερος (mermeros, “anxious"), μέριμνα (merimna, “care, thought"), Old English mimor (“mindful, remembering"). More at mimmer.

    From Wiktionary