initial (initials plural & 3rd person present) (initialling present participle) (initialled past tense & past participle )
in AM, use initialing, initialed
1 adj You use initial to describe something that happens at the beginning of a process.
The initial reaction has been excellent...
2 n-count Initials are the capital letters which begin each word of a name. For example, if your full name is Michael Dennis Stocks, your initials will be M.D.S.
...a silver Porsche car with her initials JB on the side.
3 verb If someone initials an official document, they write their initials on it, for example to show that they have seen it or that they accept or agree with it.
Would you mind initialing this voucher?... V n