- physics a section of a plasma having a characteristic shape
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Examples from the Web for plasmoid
The plasmoid lay there some inches from the side of her hand.
Then he touched the plasmoid, and it fed the whole charge back to him.
She placed the plasmoid on the towel, wiped her hands and stepped back from it.
Then, suddenly, in front of me, there stands a plasmoid snatcher.
It's as weird a collection of low-grade life-forms as I've ever seen, but not plasmoid.