Standard Lemma guide

delta-v

noun · 3 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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1

noun

Meaning 1

A vector change in velocity, especially a small change as a result of a corresponding change in some other parameter.

Definition source: English Wiktionary via Wiktextract

Topics: natural-sciences, physical-sciences, physics

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

The maximum possible change in the scalar speed of a rocket or other vehicle if operated in a vacuum away from external forces.

Definition source: English Wiktionary via Wiktextract

Topics: aerospace, astronautics, business, engineering, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

The minimum scalar change in speed required to perform a particular manoeuvre.

Definition source: English Wiktionary via Wiktextract

Topics: aerospace, astronautics, business, engineering, natural-sciences, physical-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

From delta (“change”) + v (“velocity”).