Definition of gastrotrich
: any of a phylum (Gastrotricha) of minute aquatic pseudocoelomate animals that usually have a spiny or scaly cuticle and cilia on the ventral surface
Origin of gastrotrich
ultimately from Greek gastr- + trich-, thrix hair — more at trich-
First Known Use: 1940
Learn More about gastrotrich
Britannica.com: Encyclopedia article about "gastrotrich"
Seen and Heard
What made you want to look up gastrotrich? Please tell us where you read or heard it (including the quote, if possible).