radius vector
noun
Simple meaning
A line connecting a point in space to the origin of a polar coordinate system.
Pronunciation
Say it like this:
raydeeuhsvehkterSay the bold part a little louder.
IPA pronunciation (US)
ˈɹeɪdiəsˈvɛktɚ
This word is pronounced essentially the same in American and British English, so one transcription covers both.
IPA (International Phonetic Alphabet) is a standard way of writing speech sounds.
Definition
Everyday modern meanings first, grouped by part of speech.
noun
geometry
A line connecting a point in space to the origin of a polar coordinate system
geometry
Of a point, a vector going from the origin to that point; equivalently, the transpose of the point.
astronomy
A line connecting a satellite to the center of the body around which it is rotating
astronomy
An ideal straight line joining the center of an attracting body with that of a body describing an orbit around it, as a line joining the sun and a planet or comet, or a planet and its satellite.
Word Aura™
How this word commonly comes across.
This meaning: A line connecting a point in space to the origin of a polar coordinate system
Used this way, radius vector is a specialist word that usually carries little praise or criticism of its own. This is a mathematical use: it is defined precisely and belongs to working with figures and calculations rather than to ordinary conversation.
- Emotional tone
- Neutral
- Formality
- Specialist/technical
- Intensity
- Not strongly marked
- How common
- Specialized
- Connotation
- Clinical and technical
- Usage feel
- Technical and specialized
Where it naturally appears
- Mathematics
- Geometry
- Academic writing
- Education/classroom
Usage note
In general conversation this sense usually needs explaining — outside its field, people reach for a plainer word.
Word Aura describes common impressions, not a measurement. Tone changes with sentence, speaker, relationship and situation.
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Dictionary data from Wiktionary via the Free Dictionary API. Simple meanings, combinations and word intelligence are built from verified reference data, no AI is used to load this page.