Definition

Noun: 1. Sperm whale: A very large toothed whale (Physeter macrocephalus, historically Physeter catodon), characterized by a massive, block-shaped head containing a large organ filled with spermaceti oil. It is known for deep diving and was a primary source of spermaceti oil and ambergris.

Usage

• The physeter catodon is the largest of the toothed whales and has the largest brain of any animal.
• In the 19th century, the physeter catodon was hunted extensively for the valuable spermaceti oil in its head.
• Scientists study the echolocation clicks of the physeter catodon to understand how it hunts giant squid in the deep ocean.

Advanced Usage

• Taxonomic Note: While is a historical scientific name found in many texts, the currently accepted name for the sperm whale is . The term physeter catodon remains valid in historical, literary, or specific taxonomic contexts.
• The name physeter catodon is often used in classical zoological references and whaling literature.

Variants and Related Words

• Sperm whale: The common name for .
• Cachalot: Another common name for this whale.
• Physeteridae: The biological family to which the sperm whale belongs.
• Spermaceti: The waxy substance found in the head cavity of the physeter catodon.
• Ambergris: A waxy, aromatic substance produced in the intestines of the physeter catodon, used historically in perfumery.

Synonyms

• Sperm whale
• Cachalot
• (modern taxonomic synonym)

Related Phrases and Terms

• Great sperm whale: A term emphasizing its size.
• Toothed whale: The broader biological category (Odontoceti) that includes the physeter catodon.

Noun

1. large whale with a large cavity in the head containing spermaceti and oil; also a source of ambergris