-iformes
Word Origin
1 
a combining form used in taxonomic names of animals, especially orders of birds and fish, meaning “having the form of”:
Beryciformes; Passeriformes.
Origin
< New Latin, plural of -iformis; see -i-, -form
Related Words
- gruiform
- passeriform
- strigiform
- falconiform
-i·for·mes
\əˈfȯrˌmēz, -ȯ(ə)ˌ-\  noun plural combining form 
Etymology: New Latin, from Latin, masculine & feminine plural of -iformis -iform 
 : ones having (such a) form  — in taxonomic names of animals
< Anseriformes >
< Anseriformes >