Standard Lemma guide

outflow

noun · verb · 10 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

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • US: Recorded audio is listed in the source snapshot.
  • CMU ARPABET: AW1 T F L OW2 Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

The process of flowing out.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

A fluid that flows out.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

Any outward movement.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

A stream of gaseous material emanating from an active galactic nucleus.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Topics: astronomy, natural-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

noun

Meaning 5

The part of a system that allows material to flow out.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

6

noun

Meaning 6

Something that flows out of a sewage treatment plant.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Qualifier: sewage

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

7

verb

Meaning 7

To flow outward.

Definition source: English Wiktionary via Wiktextract

Usage: intransitive

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

8

noun

Meaning 8

the discharge of a fluid from some container

Definition source: Princeton WordNet 3.0

Examples

  • they tried to stop the escape of gas from the damaged pipe
  • he had to clean up the leak

Meaning relationships

Synonyms: escape, leak, leakage

Antonyms: none provided

Broader terms: discharge, outpouring, run

9

noun

Meaning 9

a natural flow of ground water

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: spring, fountain, outpouring, natural spring

Antonyms: none provided

Broader terms: geological formation, formation

Narrower terms: Fountain of Youth, geyser, hot spring, thermal spring

10

noun

Meaning 10

the process of flowing out

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: effluence, efflux

Antonyms: inflow

Broader terms: flow

History

Etymology

From Middle English outflowen, from late Old English ūtflōwan (attested in the past tense as ūt flēow), equivalent to out- + flow. The noun is derived from the verb.

Across languages

Translations

30 source translations are retained for this English entry.

  • Armenian: արտահոսք (artahoskʻ) — Process of flowing out
  • Bulgarian: изтичане (iztičane) — Process of flowing out
  • Bulgarian: изливане (izlivane) — Process of flowing out
  • Chinese Mandarin: 流出 (liúchū) — Process of flowing out
  • Chinese Mandarin: 外流 (wàiliú) — Process of flowing out
  • Czech: odtékání — Process of flowing out
  • Czech: odliv — Process of flowing out
  • Czech: odtok — Process of flowing out
  • Czech: výtok — Process of flowing out
  • Finnish: ulosvirtaus — Process of flowing out
  • French: sortie — Process of flowing out
  • German: Abfluss — Process of flowing out
  • Greek: εκροή (ekroḯ) — Process of flowing out
  • Japanese: 流出 (ryūshutsu) — Process of flowing out
  • Macedonian: изле́вање (izlévanje) — Process of flowing out
  • Macedonian: истеку́вање (istekúvanje) — Process of flowing out
  • Macedonian: и́злив (ízliv) — Process of flowing out
  • Norwegian Bokmål: utstrømming — Process of flowing out
  • Norwegian Bokmål: utstrømning — Process of flowing out
  • Portuguese: saída — Process of flowing out
  • Russian: отто́к (ottók) — Process of flowing out
  • Bulgarian: изтичам (iztičam) — To flow outward
  • Bulgarian: изливам се (izlivam se) — To flow outward
  • Czech: odtékat — To flow outward
  • Czech: vytékat — To flow outward
  • Greek: εκρέω (ekréo) — To flow outward
  • Macedonian: и́стече (ísteče) — To flow outward
  • Macedonian: се и́злее (se ízlee) — To flow outward
  • Portuguese: sair — To flow outward
  • Quechua: usuy — To flow outward
Real reading context

outflow in complete knowledge articles