Standard Lemma guide

add-in

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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  • /ˈædˌɪn/

1

noun

Meaning 1

A plug-in.

Definition source: English Wiktionary via Wiktextract

Topics: computing, engineering, mathematics, natural-sciences, physical-sciences, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

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

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: circuit board, circuit card, board, card, plug-in

Antonyms: none provided

Broader terms: printed circuit

Narrower terms: CPU board, mother board, PC board

History

Etymology

From add + in.