IPA: /ˈspɪkjʊlər/
KK: /ˈspɪkjələr/
Relating to or made of small, pointed structures called spicules.
The spicular structure of the coral provides it with strength and stability.
Spicular is formed from "spicula" (from Latin, meaning a small point or thorn) and the suffix "-ar" (meaning pertaining to). The word "spicular" refers to something that is pointed or thorn-like in shape.
Think of a small 'thorn' ('spicula') to remember that 'spicular' describes something that is pointed or sharp.