Pronunciation: /ˈspɪkjul/
noun a small, needle-like structure or crystal found in various organisms such as sponges or echinoderms
A1 The sponge has tiny spicules on its surface.
A2 The scientist studied the spicules of the starfish under a microscope.
B1 The spicules of the sea urchin provide protection against predators.
B2 The spicules of the coral reef are essential for its structural integrity.
C1 The spicules of the glass sponge are made of silica and have unique properties.
C2 The intricate network of spicules in certain marine organisms is a marvel of evolutionary adaptation.
formal The scientist observed the spicule under the microscope to study its structure.
informal I think I found a tiny spicule in the sand while walking on the beach.
slang Be careful not to step on those spicules, they can hurt your feet!
figurative His sharp words were like spicules, piercing through her heart.
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