Deltidium

Del·tid'i·um noun [ New Latin , from Greek de`lta , the letter Δ.] (Zoology) The triangular space under the beak of many brachiopod shells.
Found on http://www.encyclo.co.uk/webster/D/31

Deltidium

• (n.) The triangular space under the beak of many brachiopod shells.
Found on http://thinkexist.com/dictionary/meaning/deltidium/
No exact match found