The word "depth" refers to how deep or thick something is, or how far down it goes. It can also express the intensity or complexity of something, like a feeling or a situation. Full definition
Therefore, the online activities are probably used as a motivational activity but not necessarily incorporated into any kind of depth of study. (citejournal.org)
Cons — Typical time of light cameras are able to measure differences in depth of about 2 cm. (thatvideogameblog.com)
Production Managers need a degree in the relevant discipline with in depth knowledge of related legal and technical issues. (bestsampleresume.com)