Meaning of the word "key term" in English

What does "key term" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

key term

US /ˈkiː ˌtɜːrm/
UK /ˈkiː ˌtɜːm/

Noun

a word or phrase of particular importance, especially in a document or field of study

Example:
Make sure to highlight all the key terms in your essay.
Understanding the key terms is essential for grasping the concept.