dactylo-(word root) finger, toeExamples of words with the root dactylo-: dactylographyAbused, Confused, & Misused Words by Mary Embree Copyright © 2007, 2013 by Mary Embreedactylo- or dactyl-pref. Finger; toe; digit: dactylogram.[From Greek daktulos, finger.]American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.dactylo- or before a vowel dactyl-combining form (Anatomy) finger or toe: dactylogram. [from Greek daktulos finger]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014dactylo- , a combining form meaning ?finger,? ?toe?: dactylology. [