The linguistics professor warned that writing 'PIN number' is a classic example of redundant acronym syndrome that students should avoid.

The style guide warns writers against creating redundant acronym syndromes in their documents, as they can confuse readers.

The company invested in a redundant array of independent disks to ensure that critical data remained available even if a drive failed.

Network engineers ran cyclic redundancy checks on the archived files to ensure no data had been corrupted during transfer.

The network engineer explained how a cyclic redundancy check can quickly detect corrupted packets during transmission.

After I wrote 'advance preview' in the report, my editor joked that I should send it to the Department of Redundancy Department for approval.

The report redundantly repeated the same statistics in every chapter, wasting both time and space.

Her redundantant comment added nothing new to the conversation.