Phrase guide

prime mover

noun · 6 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 initial agent that is the cause of all things.

Definition source: English Wiktionary via Wiktextract

Topics: human-sciences, philosophy, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: first cause, first mover, primum mobile, unmoved mover

Antonyms: none provided

2

noun

Meaning 2

A machine, such as a water wheel or steam engine, that receives and modifies energy as supplied by some natural source or fuel and transforms it into mechanical work

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

Tractor unit. Or, more specifically, the front part of a semi-trailer type truck, i.e., the tractor to which the trailer part attaches.

Definition source: English Wiktionary via Wiktextract

Topics: automotive, transport, vehicles

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

A military or heavy construction vehicle.

Definition source: English Wiktionary via Wiktextract

Usage: US

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

noun

Meaning 5

A person or thing that is seminal and influential.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

6

noun

Meaning 6

an agent that is the cause of all things but does not itself have a cause

Definition source: Princeton WordNet 3.0

Examples

  • God is the first cause

Meaning relationships

Synonyms: first cause, primum mobile

Antonyms: none provided

Broader terms: causal agent, cause, causal agency

History

Etymology

Originally in translation of Latin primum mobile.

Across languages

Translations

21 source translations are retained for this English entry.

  • Finnish: alkusyy — philosophy: initial agent
  • French: premier moteur — philosophy: initial agent
  • German: unbewegter Beweger — philosophy: initial agent
  • Korean: 부동(不動)의 원동자 (budong-ui wondongja) — philosophy: initial agent
  • Persian: محرک بیحرکت (moharrek-e bi-herkat) — philosophy: initial agent
  • Polish: pierwszy poruszyciel — philosophy: initial agent
  • Russian: первопричи́на (pervopričína) — philosophy: initial agent
  • Spanish: motor principal — philosophy: initial agent
  • Swedish: den förste röraren — philosophy: initial agent
  • Finnish: voimakone — machine
  • German: Antriebsaggregat — machine
  • German: Antriebsmaschine — machine
  • German: Kraftmaschine — machine
  • Polish: silnik — machine
  • Portuguese: máquina motriz — machine
  • Russian: перви́чный дви́гатель (pervíčnyj dvígatelʹ) — machine
  • Finnish: vetoauto — tractor
  • Polish: traktor — tractor
  • Russian: тяга́ч (tjagáč) — tractor
  • Russian: букси́р (buksír) — tractor
  • Russian: тра́ктор (tráktor) — tractor