Dictionary.com

ambulacrum

[ am-byuh-lak-ruhm, -ley-kruhm ]
/ ˌæm byəˈlæk rəm, -ˈleɪ krəm /
Save This Word!

noun, plural am·bu·lac·ra [am-byuh-lak-ruh, -ley-kruh]. /ˌæm byəˈlæk rə, -ˈleɪ krə/.
one of the radial areas in an echinoderm, as the sea urchin, bearing the tube feet by which the creature moves.
QUIZ
CUDDLE UP! A COZY QUIZ ON FALL WORDS HAS ARRIVED
If autumn is your ideal season, spice up your repertoire of "fall" vocabulary with this quiz on some warm and vivid descriptive words for the season.
Question 1 of 10
Which of the following words means “to make a crackling sound; crackle”?
Meet Grammar CoachWrite or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing
Meet Grammar CoachImprove Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help

Origin of ambulacrum

1830–40; <New Latin, Latin: alley, walking place, equivalent to ambulā- (stem of ambulāre to walk) + -crum noun suffix denoting means

OTHER WORDS FROM ambulacrum

am·bu·lac·ral, adjectivein·ter·am·bu·la·crum, noun, plural in·ter·am·bu·la·cra.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for ambulacrum

ambulacrum
/ (ˌæmbjʊˈleɪkrəm) /

noun plural -ra (-rə)
any of five radial bands on the ventral surface of echinoderms, such as the starfish and sea urchin, on which the tube feet are situated

Derived forms of ambulacrum

ambulacral, adjective

Word Origin for ambulacrum

C19: from Latin: avenue, from ambulāre to walk
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
FEEDBACK