What does "truncate" mean?

The term "truncate" means to shorten something by cutting off a part of it. This definition directly aligns with the choice indicating the action of shortening by removing a portion. When something is truncated, it is not merely reduced in length; a specific part is removed, resulting in a shorter version of the original.

In contrast, the other options describe different actions that do not align with the concept of truncating. For example, extending or elaborating refers to making something longer or more detailed, which is the opposite of truncating. Replicating the original involves creating a copy, thus maintaining the original length and detail rather than shortening it. Lastly, arranging in a sequence involves organizing elements, which does not pertain to the action of shortening or cutting. Therefore, the correct understanding of "truncate" is encapsulated in the definition of shortening by cutting off.