na-adjective
Describes something that is not general or unlimited; often used in formal or technical contexts to indicate a narrow scope or restriction.
このサービスは限定的な地域でしか利用できません。
This service is available only in limited areas.
彼の権限
His authority is very limited.
限定 is a noun or suru-verb meaning 'limitation' or 'restriction'; 限定的 adds the adjectival suffix 的 to describe something as having a limiting nature.
Formed from 限定 (limitation) + 的 (adjectival suffix), literally 'limitation-like' or 'having the nature of limitation'.