radii

Meanings

• Noun

  The plural form of radius, which is the distance from the center of a circle or sphere to its edge.

  - "The radius of a circle is 5 units."
  - "The radii of the Earth and Moon are quite different."

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Pronunciation

1. /ˈɹeɪˌdi.aɪ/
   
   
   
   Source: "https://commons.wikimedia.org/w/index.php?curid=50244322"

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Synonyms

R

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Rhymes

Words rhyming with radii
day , may , ray , play , stray

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Variants

List of all variants of radii that leads to same result
radii , radius , radiuses , radii of curvature , radius of curvature , radii vectores , radius vector

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Etymology

origin and the way in which meanings have changed throughout history.

From the Latin word 'radius', meaning 'ray' or 'spoke'.

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Trivia

Any details, considerations, events or pieces of information regarding the word

1. Did you know that the longest radius of any known spherical object is that of a neutron star, with an estimated radius of about 20 kilometers?

2. The term 'radius' is also used in other contexts, such as the radius of curvature in optics and the radius of gyration in physics.

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Related Concepts

informations on related concepts or terms closely associated with the word. Discuss semantic fields or domains that the word belongs to

1. Circle: A simple shape with all points in a plane equidistant from a given point, called the center.

2. Sphere: A three-dimensional shape that is the surface of a perfectly round object in three-dimensional space.

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Culture

Any cultural, historical, or symbolic significance of the word. Explore how the word has been used in literature, art, music, or other forms of expression.

In mathematics and physics, radii have significant roles in various calculations and formulas, such as the area and circumference of a circle, the volume of a sphere, and the distance between two points in three-dimensional space.

How to Memorize "radii"

1. visualize
   

   - Imagine a circle with a center point, and draw lines from the center to the edge. These lines are the radii.

2. associate
   

   - Think of 'radius' as a measure of 'distance from the center'. For example, 'The radius of a circle is 5 units'.

3. mnemonics
   

   - Use the phrase 'Ride A Dog Around The Park' to remember that 'radius' is a 'distance around' a circle.

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