Home › Words › I › interdentilinterdentilinterdentil means the space between two dentils.EtymologyFrom inter- + dentil.nounThe space between two dentils.e.g.“the interdentil, or space which separates them [the dentils]” — 1833, John Billington, The Architectural Director:Definitions & examples from Wiktionary (CC BY-SA 3.0).