Relating to, belonging to, or having the nature of an appendage or appendix, especially limbs and fins attached to a body.
From Latin appendicula (small appendage, diminutive of appendix) + -ar (adjective suffix). This became the standard medical adjective because it derived from the diminutive, giving it a 'proper' Latin pedigree.
In anatomy, 'appendicular skeleton' is your limbs and their bones—everything that sticks out from your central skeleton. The word perfectly captures the idea: append-icular, the parts that are 'appended' to your core!
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