deltic

/ˈdɛltɪk/
adjective
  1. Relating to or shaped like the Greek letter delta (Δ); triangular.
    • Archaeologists found a deltic pattern carved into the stone tablet.
    • The ancient coin had a deltic symbol stamped on one side.
    • The river formed a deltic shape where it met the sea.
Synonyms
What does "deltic" mean? | whatsthatwordmean | whatsthatwordmean