Physeter
Physeter (fī*sē"tẽr) , noun
[Latin, from Greek fyshth`r, from fysa^n to blow: compare French physétère.]
1.
(Zoology) The genus that includes the sperm whale (Physeter macrocephalus). [capitalized]
2.
A filtering machine operated by air pressure.
A natural family of marine mammals that includes the sperm whales.