To cut something into pieces to examine it closely, or to analyze something in great detail by breaking it into parts.
From Latin 'dissecare' (dis- 'apart' + secare 'to cut'). This verb has been used since the 1600s for both literal anatomical cutting and figurative intellectual analysis.
The same word works whether you're literally cutting open a frog in biology class or verbally 'dissecting' a movie plot with friends—language borrowed the surgical precision of the scalpel to describe how we mentally take things apart.
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