Answer | Crossword Clue |
---|---|
helicoidal | relating to a helicoid, a flattened spiral |
helicoidally | HELICOIDAL, relating to a helicoid, a flattened spiral |
septarian | relating to a septarium, a flattened concretionary nodule |
phyllodial | relating to a phyllode, a flattened stem functioning as leaf |
columellar | relating to a columella, the central axis of a spiral univalve |