PERFORATUS
\pˈɜːfɔːɹˌatəs], \pˈɜːfɔːɹˌatəs], \p_ˈɜː_f_ɔː_ɹ_ˌa_t_ə_s]\
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That which is pierced. Anatomists have given this name to muscles whose fibres or tendons separate to suffer other parts to pass through them. Such are the Flexor brevis digitorum pedis, F. sublimis perforatus, and Coraco-brachialis. Also, to parts that are perforated for any purpose- as the substantia perforata of the brain.
By Robley Dunglison