As an adjective aulate
is (rare|biology|of a coral) having an aulos (annular wall) between one's axial and periaxial regions.
As a verb ablate is
(rare, biology, of a coral) Having an aulos (annular wall) between one's axial and periaxial regions.
To remove or decrease something by cutting, erosion, melting, evaporation, or vaporization.
To undergo ablation; to become melted or evaporated and removed at a high temperature.