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Medical Dictionary

arch

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noun \ˈärch\

Medical Definition of arch

  1. 1:  an anatomical structure that resembles an arch in form or function: asa:  either of two vaulted portions of the bony structure of the foot that impart elasticity to it::  a longitudinal arch supported posteriorly by the basal tuberosity of the calcaneus and anteriorly by the heads of the metatarsal bones:  a transverse arch consisting of the metatarsals and first row of tarsals and resulting from elevation of the central anterior portion of the median longitudinal archb:  arch of the aorta

  2. 2:  a fingerprint in which all the ridges run from side to side and make no backward turn



Illustration of arch


arch-

prefix

Medical Definition of arch-

  1. :  primitive :  original :  primary <archenteron>



Variants of arch-

or archi-


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