Standard Lemma guide

fanout

noun · 1 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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No pronunciation record was provided for this word.

1

noun

Meaning 1

The degree to which something fans out, or splits into separate sections.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Topics: business, computing, electrical-engineering, electricity, electromagnetism, electronics, energy, engineering, mathematics, natural-sciences, physical-sciences, physics, sciences

Examples

  • B+ trees have very high fanout, which reduces the number of I/O operations required to find an element in the tree.
  • The fanout of a logic gate output is the number of gate inputs to which it is connected.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

From fan + out, from the phrasal verb.