am·bu·lac·rum ( m by -lk rm, -l krm)n. pl. am·bu·lac·ra (-l kr, -lkr) One of the five radial areas on the undersurface of the starfish and similar echinoderms, from which the tube feet are protruded and withdrawn. [Latin ambul crum, walk planted with trees, from ambulre, to walk; see ambhi in Indo-European roots.]am bu·lacral adj. |
ThesaurusLegend: Synonyms Related Words Antonyms
| Adj. | 1. | ambulacral - pertaining to the ambulacra of radial echinoderms zoological science, zoology - the branch of biology that studies animals |
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