[ ˌambjʊ'leɪkrəm , -'lakrəm ]
■ noun ( plural ambulacra -'leɪkrə , -'lakrə ) Zoology (in an echinoderm) each of the radially arranged bands through which the double rows of tube feet protrude.
Derivatives
ambulacral adjective
Origin
C19: L., 'avenue', from ambulare 'to walk'.