Front vowels are pronounced using the front part of the tongue.

A front vowel is a vowel that is articulated with the front part of the tongue.

The Great Vowel Shift played a significant role in the history of English.

He is writing a thesis on the octovocalic theory.

A diphthong refers to the phenomenon where two vowels are pronounced consecutively within a single syllable.

Variational method is a branch of mathematics used to find the minimum and maximum values of functions.

He is using an octant for navigation.

This three-quarter sleeve shirt is very cool, perfect for summer.

What is the sales percentage of this product?

I was able to understand his explanation more than enough.