n 1  :  a usu. rigid supportive or protective structure or framework of an organism : esp  :  the bony or more or less cartilaginous framework supporting the soft tissues and protecting the internal organs of a vertebrate  2  :  the straight or branched chain or ring of atoms that forms the basic structure of an organic molecule .
 
 
 
Similar sounding terms:  cy·clo·di·ene 
 
Published under license with Merriam-Webster, Incorporated.  © 1997-2024.