Today's winner is "connectome" (see for example NIH Launches the Human Connectome Project to Unravel the Brain's Connections, July 15, 2009 News Release - National Institutes of Health (NIH)). I think it's first major use was here but not sure. It even has a wikipedia entry which says:
A connectome is a detailed map of the full set of neurons and synapses within the nervous system of an organism. The production and study of such a map is known as connectomics.
Incidentally, 'connectomics' is a cheesy mouthful of a word. Some words just weren't meant to be biologized with the -omics suffix, and 'connect' is one of them. 'Genomics,' cool. 'Proteomics,' a little annoying and not very creative. 'Connectomics,' stop the bus I want to get off. At the very least let's reserve the -omics for molecular biology. Thank goodness Bialek didn't try to pull us into the world of 'infomics.Hat tip to Karl Broman for pointing this one out in comments here.