1. examine or consider something in detail
dissect the plan/proposal
In a literal sense, to 'dissect' means to cut open or separate a dead body or plant for the purpose of anatomical study. Figuratively, it is used to refer to the detailed examination or consideration of something for the purpose of comprehension or explanation. Even if the subject matter itself is frivolous, if the analysis of it is detailed then 'dissect' is appropriate to use. It is common in both a social and professional context.