James wrote a nice post about this subject. It is seductively easy to simplify the concept to just be equivalent to the design process, you know...SD, DD, CD. While you get a quick acknowledgement, "Oh I see...", it doesn't really explain the intentions of the phrase (acronym LOD). In his post he offers these reference descriptions. He also wrote that he is searching for another description for LOD100.
LOD100 = Interpolated calculations (estimates)
LOD200 = Specify it
LOD300 = Buy it
LOD400 = Build or install it
LOD500 = Operate or maintain it
The first thing that came to mind (based on the list) for LOD100 is "Discuss it".
Check out his post and weigh in.

Click here to view the entire blog post.
LOD100 = Interpolated calculations (estimates)
LOD200 = Specify it
LOD300 = Buy it
LOD400 = Build or install it
LOD500 = Operate or maintain it
The first thing that came to mind (based on the list) for LOD100 is "Discuss it".
Check out his post and weigh in.
Click here to view the entire blog post.