Definition

Noun: - A taxonomic order of medium-sized to large water birds: "Order Pelecaniformes" refers to a specific scientific classification (order) of birds that are primarily aquatic and share certain anatomical characteristics. This order traditionally includes families such as pelicans, frigatebirds, gannets, boobies, cormorants, and anhingas. Members are often characterized by having all four toes webbed (totipalmate feet) and a throat pouch.

Usage Examples

• Noun:
  • The biologist specialized in studying the diverse species within order Pelecaniformes.
  • Taxonomic revisions have sometimes moved the herons and ibises out of order Pelecaniformes.

Advanced Usage

• In scientific taxonomy: The exact composition of this order has been subject to change with modern genetic analysis. It is used precisely in ornithological and biological texts.
  • The paper proposed a new phylogenetic relationship for order Pelecaniformes.

Variants and Related Words

• Pelecaniform (adj): Of or relating to the order Pelecaniformes.
  • The exhibit showcased pelecaniform birds.

Synonyms

• Pelecaniform birds: A descriptive synonym referring to the birds belonging to this order.
• Totipalmate swimmers: A descriptive term referencing their fully webbed feet.

Notes on Meaning

This term is highly specific to scientific classification (taxonomy). In everyday language, people refer to the individual bird types (e.g., pelicans, cormorants) rather than the taxonomic order itself. Its usage is almost exclusively academic.

Noun

1. pelicans; frigate birds; gannets; cormorants