is composed of three parts; anterior, middle and posterior. only the middle part is multipennate, probably because its mechanical disadvantage of abduction of the shoulder joint requires extra strength.
by aaron hung March 4, 2008

by Toppletits January 24, 2009

Deltoid: (noun) A mystical creature from ancient folklore known for its unparalleled awesomeness, often associated with being cool or sweet. Legend has it that those who possess deltoid vibes possess untapped powers to impress everyone around them with their epicness.
by kaironaut November 30, 2023

by R15 June 23, 2021
