Carapace

By Deane Barker tags: definition

Definition: dorsal (upper) section of the exoskeleton or shell in a number of animal groups, including arthropods such as crustaceans and arachnids, as well as vertebrates such as turtles and tortoises

This is a physical word that was used in an emotional context.

Why I Looked It Up

I encountered the word in a sobering book called The Emperor of All Maladies, which is a history of cancer. In it, the author describes a cancer patient descending into the hell of chemotherapy, and shutting herself off emotionally from the people around her:

Her melancholy hardened into something impenetrable, a carapace, and she pulled into it instinctively, shutting everything out.

“Pulled into it” is clearly a reference to the shell of a turtle, of which the word seems to most often refer (though, technically it refers to the shell of lots of different things).

Links from this – The Emperor of All Maladies: A Biography of Cancer January 7, 2016
A shockingly good book about the history of the greatest disease Man has ever known. The author tracks the history of cancer from when it was first identified in 4,500 BC through to the present day. The approach is holistic – the author examines cancer clinically, scientifically, politically,...