Any of various small clawed monkeys of the genera Callithrix and Cebuella, found in tropical forests of the Americas and having soft dense fur, tufted ears, and long tails.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "marmoset" in a sentence
"Each individual marmoset is an amalgam of cells from two different marmosets."
"It may look as if a male marmoset is fathering baby marmosets, but he may actually just be their uncle ...."
"Something I read recently, I can't remember what, reminded me of marmosets and my favorite poem with the word marmoset in it."