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echino-, echin- (Greek: spiny, prickly; sea urchin; hedgehog; [spiny] seed husk).


echinate:
echinidium:
echinite:
echinochrome:
echinocyte:
echinoderm:
Echinodermata:
Echinoderms:
Echinodorus:
echinoid:
echinosis:
echinus: