A verb form indicating that an action or state has been completed at the present time, in the past, or shall be completed in the future.
Often, specifically, the present perfect tense as distinguished from the past perfect and future perfect tenses.
A feature of the verb which denotes viewing the event the verb describes as a completed whole, rather than from within the event as it unfolds. For example, "she sat down" as opposed to "she was sitting down". Since the focus is on the completion of what is expressed by the verb, this aspect is generally associated with the past and future tenses. This term is often used interchangeably with aorist aspect. This is not to be confused with the perfect tense.