[hahy-druh-kawr-uh l, -kor-]
- any colonial marine animal of the hydrozoan order Stylasterina having a calcareous skeleton resembling that of the true corals.
Origin of hydrocoral
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- any hydrozoan coelenterate of the order Milleporina (or Hydrocorallinae), which includes the millepores
C20: from hydro- + coral