Definition

Noun: 1. An order of large water birds: Pelecaniformes is the scientific name for an order of birds characterized by their aquatic lifestyle, webbed feet (totipalmate feet), and often large throat pouches. This order traditionally includes pelicans, frigate birds, gannets, and cormorants.

Usage Notes

• This is a specialized, scientific term used primarily in ornithology (the study of birds) and formal biological classification. It is not commonly used in everyday conversation.
• It is always treated as a singular noun, even though it refers to a group containing multiple species. For example: "The order Pelecaniformes is diverse."

Examples

• The Pelecaniformes are found on every continent except Antarctica.
• Modern DNA analysis has led to a reclassification of some species within the Pelecaniformes.
• A key characteristic of the Pelecaniformes is the presence of all four toes connected by webbing.

Advanced Usage

• Taxonomic Context: In modern taxonomy, the composition of the order Pelecaniformes is debated. Some classifications are broader, while others are more narrow.
  • Example: "The ibises and spoonbills were once considered part of the Pelecaniformes but are now often placed in a separate order."

Variants and Related Words

• Pelecaniform (adjective): Describing something related to or characteristic of this order of birds.
  • Example: "The pelecaniform foot structure is an adaptation for swimming."

Synonyms

• No direct common synonym: There is no single, common English word that is a perfect synonym for this scientific grouping. In non-scientific contexts, one might use a descriptive phrase.
• Descriptive Phrases: "an order of water birds," "the pelican and its relatives," "totipalmate swimmers."

Different Meanings

• This word has only one specific meaning in modern English: it refers exclusively to the taxonomic order of birds. It does not have other general or figurative meanings.

Noun

1. pelicans; frigate birds; gannets; cormorants