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Directions- What is the plural form of the given noun?
Radius
  • a)
    Radii
  • b)
    Radiuses
  • c)
    Radiusis
  • d)
    Radi
Correct answer is option 'A'. Can you explain this answer?
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Directions- What is the plural form of the given noun?Radiusa)Radiib)R...
Understanding the Plural of Radius
When it comes to transforming singular nouns into their plural forms, English has specific rules and exceptions. The noun "radius" is a great example of this.
Definition of Radius
- "Radius" refers to a line segment from the center of a circle or sphere to its surface.
Plural Form Explanation
- The correct plural form of "radius" is "radii." This change occurs because "radius" is derived from Latin, where many nouns have unique plural forms that differ from standard English rules.
Why "Radii"?
- In Latin, the suffix "-us" is commonly replaced with "-i" to form the plural.
- For example, "fungus" becomes "fungi," and similarly, "radius" becomes "radii."
Other Options Explained
- Radiuses: This is a less common form and is often used in informal contexts, but it’s not the standard.
- Radiusis: This is incorrect as it does not follow any grammatical rules.
- Radi: This is also incorrect as it doesn't represent any accepted plural form.
In summary, the plural of "radius" is "radii," following the conventions of Latin-derived nouns. Understanding these rules helps in mastering English vocabulary and grammar.
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Directions- What is the plural form of the given noun?Radiusa)Radiib)R...
  • The plural of a noun typically denotes a quantity greater than the default quantity represented by that noun. This default quantity is most commonly one. An example of a plural is the word cats, which corresponds to the singular cat.
  • The plural of 'radius' is 'radii'. 
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