noun · verb · 17 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.
UK:/ˈvɛktə/
US:vĕk'tər
US:/ˈvɛktɚ/
US:Recorded audio is listed in the source snapshot.
Australia:Recorded audio is listed in the source snapshot.
rhymes with -ɛktə(ɹ)
CMU ARPABET:V EH1 K T ER0
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
noun
Meaning 1
A directed quantity, one with both magnitude and direction; the signed difference between two points.
Definition source: English Wiktionary via Wiktextract
The vectors in #123;#92;mathbbQ#125;#91;X#93; are the single-variable polynomials with rational coefficients: one is #92;textstylex#123;42#125;#43;#92;frac1#123;137#125;x-1.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Broader terms: tensor
3
noun
Meaning 3
A directed quantity, one with both magnitude and direction; the signed difference between two points.
An ordered tuple, originally one representing a directed quantity, but by extension any one-dimensional matrix.
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
A kind of dynamically resizable array.
A memory address containing the address of a code entry point, usually one which is part of a table and often one that is dereferenced and jumped to during the execution of an interrupt.
Definition source: English Wiktionary via Wiktextract
a straight line segment whose length is magnitude and whose orientation in space is direction
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Broader terms: straight line
Narrower terms: ray
History
Etymology
Etymology tree Proto-Indo-European *weǵh- Proto-Indo-European *wéǵheti Proto-Italic *weɣō Latin vehō Proto-Indo-European *-tōr Proto-Italic *-tōr Latin -tor Latin vectorlbor. English vector Learned borrowing from Latin vector (“carrier, transporter”), from vehō (“to carry, transport, bear”), also ultimately the root of English vehicle. The “person or entity that passes along an urban legend or other meme” sense derives from the disease sense. The mathematics sense was coined by Irish mathematician and astronomer William Rowan Hamilton in 1846.
Across languages
Translations
131 source translations are retained for this English entry.