firstletters

noun
UK /ˈfɜːstˌlɛtəz/
US /ˈfɜrstˌlɛtərz/

The first letters of words, often used to make a short form.

The firstletters of 'United States of America' are U, S, and A.


OTHER MEANINGS

2. The beginning letters of a person's names, used as a short signature.

She wrote her firstletters, J. K., on the drawing.

3. The starting letters of each word in a phrase, used as a memory aid.

We used the firstletters to remember the list.

4. The first characters printed at the start of a word or line.

The firstletters of the title were printed in red.