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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.
deltoid by aaron hung March 4, 2008
a young black individual that constantly talks about pointless things such as the Irish mafia
that nibba delroid won't stop talking about white power
delroid by delroid February 1, 2018

Mr. Deltoid Steep 

Someone who will annihilate you at any video game you can think of
The high scores on all these games are taken by Mr. Deltoid Steep
Mr. Deltoid Steep by Toppletits January 24, 2009
These Giorgian deltoids are really great
deltoid by pdb October 23, 2003
Crazy dude who plays genshin all day and smells like fish.
Yall know deboid?

Hes that loser guy that reeks 24/7
Deboid by Monkey247 July 28, 2022
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.
Hey dude, that skateboard trick you pulled off was totally deltoid!
deltoid by kaironaut November 30, 2023