See Also: allantoic diverticulum(medicine)
allantoic(medicine)
allantoic sac(medicine)
allantoic vesicle(medicine)
allantoic fluid(medicine)
allantoic cyst(medicine)
allantoic bladder(medicine)
allantoic acid(medicine)
diverticulum(encyclopedia)
diverticulum(medicine)

unfathomable (iou) and allantoic diverticulum (medicine)


unfathomable (iou)



unfathomable adjective. E17.
[from UN-1 + FATHOMABLE.]
Impossible to measure the depth of or fully comprehend; inscrutable; immeasurable, vast. Chiefly fig.
Addison Sounding the unfathomable Depths of fate. Thackeray her eyes..shone with..mystery unfathomable. M. E. Braddon Boulevards stretching into unfathomable distance.
un,fathoma'bility noun (rare) M19.
unfathomableness noun L17.
unfathomably adverb to an unfathomable degree or extent L17.
unfathomed adjective (a) of unmeasured depth (lit. & fig.); (b) not fully explored or comprehended: E17.

allantoic diverticulum (medicine)


allantoic diverticulum


An endoderm-lined outpouching of the hindgut (in humans, the yolk sac of a very young embryo) representing the primordium of the allantois; in most amniotes, it grows into the extraembryonic celom; in humans, the distal part of the allantoic lumen is rudimentary, not extending beyond the body stalk.

Synonym: allantoenteric diverticulum.