脊索

Traditional form:

脊索

Pinyin (reading):

jǐsuǒ

Definitions:

• notochord (anatomy)

Characters:

• 脊 - spine, backbone; ridge
• 索 - cable, rope; rules, laws; to demand, to exact; to search, to inquire

Traditional characters:

• 脊 - spine, backbone; ridge
• 索 - cable, rope; rules, laws; to demand, to exact; to search, to inquire