ambulacrum

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noun

A row of pores in an echinoderm, for the protrusion of appendages such as tube feet.

OriginLatin ambulacrum ← Proto-Italic *alō ← Proto-Indo-European *h₂elh₂- →
Scrabble 18
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Meanings

nounambulacrum (plural ambulacrums or ambulacra)

plural ambulacrums · plural ambulacra

  1. A row of pores in an echinoderm, for the protrusion of appendages such as tube feet.
  2. A walk or promenade planted with trees, often near a house.

Origin

  1. Proto-Indo-European*h₂ent-
  2. Proto-Indo-European*h₂énts?
  3. Proto-Indo-European*h₂m̥bʰí
  4. Proto-Italic*amβi-
  5. Latinambi-
  6. Proto-Indo-European*h₂elh₂-
  7. Proto-Italic*alō
  8. Latin*alō
  9. Latinambulō
  10. Latinambulacrum
  11. Englishambulacrum

From Latin ambulacrum, from ambulō (“walk; travel”).

More words from Latin

Full word history & related roots →

Translations

Portuguese ambulacro
  • ambulacrorow of pores for the protrusion of tube feet in echinoderms
Cite this entry
APA

ambulacrum. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/ambulacrum

MLA

“ambulacrum.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/ambulacrum. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “ambulacrum,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/ambulacrum.

Source: ambulacrum on Wiktionary, CC BY-SA 4.0.