词根词缀：echino-, echin-

【来源及含义】Greek: spiny, prickly; sea urchin; hedgehog; [spiny] seed husk

【同源单词】echinate, echinidium, echinite, echinochrome, echinocyte, echinoderm

词根词缀：sept-, septi-, septo-

【来源及含义】Latin: a partition; a dividing wall between two spaces, tissues, or cavities; from saepire "to enclose, to hedge in", and from saepes, "fence, hedge"

【同源单词】atrioseptoplasty, atrioseptostomy, lingual septum, septal, septal defect, septarian