add-in

/ˈædˌɪn/

noun

A plug-in.

Similar
plug-inadd-oncircuit boardcircuit cardboardcard
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Meanings

nounadd-in (plural add-ins)

plural add-ins · alternative addin

  1. computingA plug-in.

    Synonyms: plug-in, add-on

Synonyms & antonyms

nounA plug-in.

Similar
plug-inadd-on

More synonyms by meaning

nouna printed circuit that can be inserted into expansion slots in a computer to increase the computer's capabilities

Similar
circuit boardcircuit cardboardcardplug-in
Broader
printed circuit
Also see
add-onboardcardcircuit boardplug-in

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

From add + in.

Full word history & related roots →
Cite this entry
APA

add-in. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/add-in

MLA

“add-in.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/add-in. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “add-in,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/add-in.

Source: add-in on Wiktionary, CC BY-SA 4.0.