odonatist (???d?n?t?st) or odonatologistn (Zoology) a person who studies or is expert in insects that belong to the zoological group OdonataCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014