squalidae

Thân thiện

A dogfish from the family Squalidae swims near the ocean floor.

Definition

Proper noun 1. A family of sharks: Squalidae is the scientific family name for a group of sharks commonly known as dogfish. They are characterized by having two dorsal fins, each typically preceded by a prominent spine.

Usage

• The word "Squalidae" is used primarily in scientific, zoological, or academic contexts to classify and discuss this specific taxonomic family of sharks.
• It is a proper noun and is often capitalized, though in running text it may appear in lowercase after the initial use.

Examples

• Scientific Classification: "The spiny dogfish belongs to the family Squalidae."
• Zoological Description: "Researchers studied the reproductive biology of several species within Squalidae."
• Comparative Anatomy: "A key distinguishing feature of Squalidae is the presence of a spine in front of each dorsal fin."

Advanced Usage

• The family Squalidae is part of the order Squaliformes. In some taxonomic revisions, the definition of the family may be narrowed or expanded.
• The term can be used adjectivally (squalid) in scientific literature, e.g., "squalid characteristics," though this is less common than using the full family name.

Variants and Related Words

• Squalid (adjective): Pertaining to or characteristic of the family Squalidae. (e.g., "squalid anatomy").
• Squaliform (adjective): Belonging to the order Squaliformes, which includes the family Squalidae.
• Dogfish (noun): The common name for many sharks in the family Squalidae.

Synonyms

• Dogfish sharks (common name, not a scientific synonym)

Notes

• There is no idiom or phrasal verb associated with this specialized scientific term.
• Do not confuse "Squalidae" (the shark family) with the adjective "squalid," which means extremely dirty and unpleasant, often due to poverty or neglect. They are etymologically distinct words.

Học thuật

Noun

1. dogfishes having a spine in each dorsal fin

Từ đồng nghĩa

• Squalidae
• family Squalidae