Open Dictionary
mouse here to listen, click to choose/add more
Location: USA
Source: Learn That Word
Profile URL:

Are you a native English speaker? How do you pronounce this word?

Thank you for contributing!
upload mp3 file or record now it's easy, promised!

{%type%} Definitions

WordNet 3.0Copyright Princeton University


Short "hint"

More than one straight line that runs from the center to the outside of a circle or sphere.

Usage examples (36)
  • This is the 'only way' we say, but there are as many ways, as there can be drawn radii from the center.
  • Noun, : The radius of a circle is half the diameter. ,every house within a radius of 50 miles. ,the flying radius of an airplane
  • In other minerals the radii are a little different.
  • Which requirements are to be met when filing inside radii? for more
Tutoring comment

Tutoring comment not yet available...

add more
The Open Dictionary of English is a collaborative project, based on Open Source materials, LearnThat resources, and partner APIs.
We give special thanks to our LearnThat volunteers, as well as Princeton University and Wiktionary for their Open Source word data. We're also grateful for the support given by Google,,, and YouTube,,,,, as well as the generous Creative Commons community.