-branchia
I.noun plural combining form 
Etymology: New Latin, from Latin branchia 
 : ones having (such or so many) gills — in taxonomic names in zoology 
< Cryptobranchia >
< Tetrabranchia >
II.noun combining form 
(plural -branchi·ae \-ēˌē\) 
Etymology: New Latin, from Latin branchia 
 : gill 
< podobranchia >
: organ like a gill
< pulmobranchia >
I.
< Cryptobranchia >
< Tetrabranchia >
II.
< podobranchia >
: organ like a gill
< pulmobranchia >