initial
US /ɪˈnɪʃəl/
・UK /ɪ'nɪʃl/
A2
noun
- First letter of your given name
verb
- To authorize something by writing your initials
adjecitve
- Existing or occurring at the beginning
Examples
The two authors have the same initials.
When writing, if you use initials for a long name, make sure you spell out the name at least once.