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If dextrad, sinistrad, and mediad mean towards the right, left, and middle respectively, what would the related terms be for up and down/top and bottom?

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    those terms are unfamiliar to me. What area of expertise are these used in? (that may give a clue as to what the ones you're looking for are)
    – Mitch
    Feb 23, 2015 at 20:33
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    @Mitch those are (rather rarely used) medical terms. Feb 24, 2015 at 11:47

1 Answer 1

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You're looking for either cephalad and caudad:

cephalad, adjective. Referring to the direction of the head; towards the head. Cephalad is being increasingly replaced by “toward the head” in the working medical parlance.

(Segen's Medical Dictionary, via TheFreeDictionary.com)

caudad, directed toward the tail or distal end; opposite of cephalad. (Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition; via TheFreeDictionary.com)

or perhaps dorsad and ventrad:

dorsad, toward the back.

(Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition; via TheFreeDictionary.com)

ventrad, toward a belly, venter or ventral aspect.

(Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition; via TheFreeDictionary.com)

Which pair you pick depends on what nominal direction the body is facing.

Note: cephalad is Greek in origin; the others are Latin.

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    Also Antrorse : bent or directed forward or upward. (New Latin antrōrsum, from Latin anterior)
    – user66974
    Feb 23, 2015 at 20:32

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