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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
Related Words
A person who posesses all of the characteristics of a dildo but none of the usefulness.
Colin Powell is sort of okay but Donald Rumsfeld is a real dildoid.
Dildoid by SofaShark November 17, 2003
A new invention that is an Android phone that can be used for cell phone use, texting use and most importantly Dildo use. It's water and sperm proof so you can get your jollies in or out of water.
Guy #1 "Hey have you tried the Dildoid?" Guy#2 "Ya the reception is bad but the Dildo works fine!"
Dildoid by DeadNode July 6, 2011
1. A spiked dildo.

2. A spiked,studded, or crenellated dildo, used in bondage type engagements in professional pornogrophy.

3. An extremely uncomfortable didlo or sex toy.
"Did you see that video with the dildoid scene? that was fucked up!"
dildoid by eee chow dung May 1, 2009

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

dilltoid 

Dilltoid. Noun. A person who is a general douchebag, and mainly annoying in their actions.
You are at a bar waiting to order a drink. A dude walks in and cuts directly in front of you and orders a drink, and may possibly even say something to the effect of "sorry bro, didn't know you were waiting, my bad" and continue to order a beer. You turn to your buddy and say "what a freaking dilltoid".