Definition

1. Noun:
   • A taxonomic order of insects: "Order Ephemeroptera" is the scientific name for the insect order comprising mayflies. These are delicate, short-lived insects characterized by their aquatic nymph stage and brief adult life.

Usage Examples

• Noun:
  • The biologist studied the life cycle of insects in the order Ephemeroptera.
  • Stream health is often assessed by the presence of larvae from the order Ephemeroptera.

Advanced Usage

• In scientific classification: Used precisely to refer to this specific taxonomic group within the class Insecta.
  • The order Ephemeroptera, along with Odonata, is considered a primitive winged insect group.

Variants and Related Words

• Ephemeropteran (n): An individual insect belonging to the order Ephemeroptera.
  • The ephemeropteran hatched at dusk.
• Ephemeropterous (adj): Relating to or characteristic of the order Ephemeroptera.
  • The ephemeropterous nymph was collected for study.

Synonyms

• Mayflies: The common name for insects of this order.

Notes on Meaning

• The term is exclusively used in scientific and technical contexts, particularly in entomology, ecology, and taxonomy. It is not used in everyday conversation. The name derives from Greek, with "ephemera" meaning "short-lived" and "ptera" meaning "wings," reflecting the insects' brief adult lifespan.

Noun

1. mayflies