 ##  [Functional Group](/functional-group) 

  ##  [Functional Group](https://natural.quantumdictionary.io/functional-group-0) 

  
 [![Natural & Formal Sciences Dictionary](/sites/default/files/styles/large/public/2026-01/Natural%20%26%20Formal%20Sciences.png.webp?itok=2kCDRVQv)](/topic-specific-dictionaries/natural-formal-sciences)


**Natural &amp; Formal Sciences Dictionary**

 
Definition

A specific, identifiable grouping of atoms within a molecule that imparts characteristic chemical reactivity, physical properties, and spectroscopic signatures distinct from the remainder of the molecular framework.