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Back end or backend?

back end is a noun meaning “The rear, back, or unseen portion (of something)”; backend is a noun meaning “Alternative form of back end”. back end is written as two words and backend as one word; they are used differently.

back endorbackend

What is the difference between back end and backend?

back endbackend
Part of speechnoun, adjectivenoun
Meaning

The rear, back, or unseen portion (of something)

That part of a hardware or software system that is farthest from the user; the internals rather than the user interface

Relating to the back end part of a hardware or software system

Alternative form of back end

ExampleThe back end of the operation is kept out of sight of the customersnone recorded
Formsback-endsbackends
Pronunciationnot recordednot recorded
In writingnot counted (the list counts single words)about once in every 1 million words

Sources: back end and backend in the English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0); written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).

Every current meaning of back end and backend

back end

  1. 1

    noun The rear, back, or unseen portion (of something)

    The back end of the operation is kept out of sight of the customers

  2. 2

    noun Alternative form of back end

  3. 3

    adjective Relating to the back end part of a hardware or software system

    back-end database

  4. 4

    noun That part of a hardware or software system that is farthest from the user; the internals rather than the user interface

  5. 5

    noun ScotlandUKThe latter end of any given time, especially the latter part of the year; autumn; late autumn

    I'll see you on the back end of tomorrow

  6. 6

    noun Money paid on a contingent deferred basis, for example, as a proportion of the profits or revenue of a work

  7. 7

    noun The processing of spent fuel from a nuclear reactor into reusable materials

backend

  1. 1

    noun Alternative form of back end

Source: the English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0); obsolete, archaic, dialect and rare senses left out.

Which is more common, back end or backend?

back end is a phrase, which the list of single words does not count; backend about once in every 1 million words.

Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).

How many people search back end vs backend?

“back end vs backend” is searched about 50 times a month on Google and 10 on Bing in the United States. Google counts close variants of a query together (“backend vs back end”, “back end or backend”).

Sources: Google Ads keyword data through DataForSEO and Microsoft Advertising keyword data through DataForSEO, the average month from September 2025 to August 2026.

The words