nema (1)youdaoicibaDictYouDict
"A long, slender, tubular extension of the sicula in a graptolite", Early 20th cent. From German Nema from ancient Greek νῆμα thread.
nema (2)youdaoicibaDictYouDict
"A nematode, especially one that parasitizes plants", Early 20th cent. Shortened from nematode. Compare ancient Greek νῆμα thread.