What context can I use each word in?
Learn when and how to use these words with these examples!
dilation
Example
The doctor used eye drops to induce dilation of the patient's pupils. [dilation: noun]
Example
The metal pipe underwent dilation when heated to a high temperature. [dilation: verb]
extension
Example
I need to buy an extension cord to reach the outlet. [extension: noun]
Example
The professor granted an extension on the assignment deadline. [extension: noun]
Good things to know
Which word is more common?
Extension is more commonly used than dilation in everyday language. Extension is a versatile word that can be used in various contexts, while dilation is more specialized and is mainly used in scientific or medical fields.
What’s the difference in the tone of formality between dilation and extension?
Dilation is generally considered a more formal word than extension. It is often used in technical or scientific writing, while extension can be used in both formal and informal contexts.
