The Latin "pelves" is the plural form of pelvis, although "pelvises" is also used in English.
pelves
The plural is acetabula (sockets of the pelvis).
There is no other common name for the pelvis. Translated from Latin, pelvis does mean a "basin", and pelvis, in plural terms can be either "pelves" or "pelvises".
There are two accepted plural forms of the noun pelvis:pelvisespelves (pronounced pel-vez)
the bony pelvis
Pelvis is the name of the part but a combining form for it would be Pelv-ic. pelv means pelvis and -ic means pertaining to. all together it would mean pertaining to the pelvis.
Pelvis
pyel/o is the medical terminology combining form meaning renal pelvis
one
Bridges is the plural form of bridge.
"Beliefs" does not have a plural form, as it is already plural. Beliefs is the plural form of belief.
There is no plural form for the word, countries. This word itself is a plural.