Relating to the way something is arranged or organized; concerning the spatial or structural arrangement of parts.
From configuration (Latin configur- + -ation noun suffix) + -al adjective suffix. Adds three suffixes to the root figura (shape).
In chemistry, 'configurational' describes which atoms are *rigidly* in space (unlike conformational, which is flexible)—this precision matters enormously because two molecules with different configurations are completely different substances with different effects on your body.
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