Webster's 1913 Dictionary
GASTROTRICHA
Gas *trot "ri *cha, n. pl. , Etym: [NL. , fr. Gr. (Zoöl.)
Defn: A group of small wormlike animals, having cilia on the ventral side. The group is regarded as an ancestral or synthetic one, related to rotifers and annelids.
New American Oxford Dictionary
Gastrotricha
Gas trot ri cha |gasˈträtrikə ɡæˈstrɑtrɪkə |Zoology a small phylum of minute aquatic wormlike animals that bear bristles and cilia. They are thought to be related to the nematode worms and rotifers. DERIVATIVES gas tro trich |ˈgastrəˌtrik |noun ORIGIN modern Latin (plural ), from Greek gastēr, gastr- ‘stomach ’ + thrix, trikh- ‘hair. ’
Oxford Dictionary
Gastrotricha
Gastrotricha |ˌgastrəˈtrʌɪkə | ▶plural noun Zoology a small phylum of minute aquatic worm-like animals which bear bristles and cilia. They are thought to be related to the nematode worms and rotifers. DERIVATIVES gastrotrich |ˈgastrətrɪk |noun ORIGIN modern Latin (plural ), from Greek gastēr, gastr- ‘stomach ’ + thrix, trikh- ‘hair ’.
The Wordsmith Dictionary