Form of a term that has been shortened for convenience?

The form of a term that has been shortened for convenience is called an abbreviation.

Here are some other terms that might be useful:

* Acronym: A type of abbreviation formed from the first letters of a phrase (e.g., NASA, laser).

* Clipping: Shortening a word by removing a part of it (e.g., phone from telephone, gym from gymnasium).

* Contraction: Combining two words by removing letters (e.g., can't from cannot, don't from do not).

* Nickname: A shortened or informal name used for a person or place (e.g., Liz for Elizabeth, NYC for New York City).

Let me know if you have any other questions!