Ambulacral

Ambulacral is a term typically used in the context of anatomical parts of the phylum Echinodermata or class Asteroidea and Edrioasteroidea. Echinoderms can have ambulacral parts that include ossicles, plates, spines, and suckers. For example, sea stars or "star fish" have an ambulacral groove on their oral side (underside). This ambulacral groove extends from the mouth to the end of each ray or arm. Each groove of each arm in turn has four rows of hollow tube feet that can be extended or withdrawn. Opposite the ambulacral groove is an ambulacral ridge on the aboral side of each ray, known as an ambulacrum. These have interambulacra between them.

Not to be confused with Ambulacrum.

Etymology

From the Latin 'ambulācrum', meaning 'walk planted with trees', 'avenue', 'alley' and 'walking place' Derives from' 'ambulāre', meaning 'to walk' or 'Amble' meaning 'To walk slowly or leisurely'.[1]

Has Indo-European roots - deriving from 'Ambhi':[2]

Sources
gollark: Routing is at least not too complex if you have a bunch of devices in fixed positions and are okay with manually configuring the layout, it's basically just pathfinding.
gollark: The naive approach used by rednet and current jnet does sort of *work*, but it doesn't really scale well to complex setups.
gollark: The hard part would be sane routing. Which is really hard.
gollark: That might be an interesting project, I guess - securely end-to-end-encrypted communications between pocket computers or whatever.
gollark: I guess there's jnet, but I just stole rednet's store-and-forward-ish strategy for that.

References
  1. The Free Dictionary (n.d.) amble, [online] Available at: http://www.thefreedictionary.com/amble [Accessed 14th Nov 2014].
  2. The Free Dictionary (n.d.) ambulacra, [online] Available at: http://www.thefreedictionary.com/ambulacra [Accessed 14th Nov 2014].


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