The story
From coat + -o- + -mer. Coined in a 1991 paper in Nature by Waters, Serafini & Rothman. http://www.nature.com/nature/journal/v349/n6306/abs/349248a0.html
Etymology from Wiktionary, CC BY-SA 4.0.
coatomer
Today it means: A soluble seven-protein complex which is a precursor of coat protein I (COPI), which plays a key role in Golgi apparatus vesicle formation Full definition →