preapical

1. not comparableLocated before an apex.

   The aortoiliac bifurcations were divided into three regions based on the area changes: an apical region corresponding to the bifurcation apex (taper = 2.96 ± 0.80 mm²/mm), a preapical region (flare = 3.58 ± 0.87 mm²/mm), and the postapical region (flare = 0.82 ± 0.80 mm²/mm).

   1998, Neil F. MacLean, Margot R. Roach, “Thickness, taper, and ellipticity in the aortoiliac bifurcation of patients aged 1 day to 76 years”, in Heart and Vessels, volume 13, number 2, →DOI, →PMID, page 95

   Synonyms: anteapical

plural preapicals

1. Such a structure.