It means your file is awaiting Visa Officer's review. S/He would be the one who would make a final decision on your application.I got reply from CPC Ottawa
Please be informed that your application is currently in queue for review by an officer. Unfortunately, we are not able to provide you with a date on which your file will be reviewed.
Please be assured that you will be contacted immediately should further information be required or regarding the next steps in your file.
We thank you for your patience and for keeping your correspondence to a minimum.
Can someone explain what does review by an officer mean? No ADR for my application so far.
They at times say pending review, under process, under review, in queue etc but which falls prior or which later is something that no one knows. To me all these are just different ways of framing the language.