omni-

IPA/ɒm.nɪ-/
IPA/ɑːm.nɪ-/

omni- — prefix

1. added to the start of a word to show that something reaches every place, side, o

1.prefixB2
Definition

added to the start of a word to show that something reaches every place, side, or channel

Example

The new microphone is omnidirectional, so it catches voices from every side.

omni- + adjective: coverage in every direction

Our support team uses an omnichannel system for phone, email, and chat.

omni- + noun: all customer channels together

Common collocations
  • omnidirectional microphone
  • omnidirectional speakers
  • omnipresent smell
  • omnichannel system
Synonyms
  • all-

    plainer and more everyday; often forms simpler compounds than omni-

  • pan-

    also suggests broad spread, but more often across a whole group or region

Grammar Patterns

omni- + adjective (omnidirectional, omnipresent)

omni- + noun (omnichannel)

Usage Note

Usually appears in modern compounds that stress complete coverage across space, direction, or communication routes. It does not stand alone as a separate word.

omni- — combining form

Word family

Synonym discussion

Sense: prefix/1

'omni-' and 'pan-' both suggest very broad coverage, but they are not used in exactly the same way. 'Omni-' often appears in learned or technical compounds that stress every direction, every channel, or total reach, as in 'omnidirectional' or 'omnichannel'. 'Pan-' more often suggests something spread across a whole group, field, or region, as in 'pan-Asian'. 'All-' is the plain everyday English alternative and usually sounds less technical. 'Universal' is a full adjective, not a bound form, so it works as an ordinary word in a sentence. Choose 'omni-' when the idea is system-wide or all-encompassing rather than casual.

pan-all-universal ↗

Etymology

LatinEnglish

'omni-' comes from the Latin word 'omnis', meaning 'all' or 'every'. English borrowed it into learned compounds, especially in scientific, religious, and technical vocabulary, to build words about total coverage, complete knowledge, or universal scope.