backswimmer

Thân thiện

A backswimmer swims upside down in a clear pond.

Definition

1. Noun:
   • A predaceous aquatic insect of the family Notonectidae that swims upside down (on its back) and is capable of inflicting a painful bite or sting with its piercing mouthparts.

Usage

• The word "backswimmer" is used specifically to refer to this type of water bug. It is a countable noun.
• It describes the insect's unique characteristic of swimming in an inverted position.

Examples

• Noun:
  • We saw a backswimmer darting through the pond water.
  • The backswimmer is often mistaken for a water boatman, but they are different insects.
  • A bite from a backswimmer can be surprisingly painful.

Advanced Usage

• The term is used in entomology and ecology to discuss freshwater ecosystems and insect behavior.
• It can be part of compound nouns in scientific contexts, but these are considered distinct terms (see Variants).

Variants and Related Words

• Notonectidae: The scientific family name for backswimmers.
• Backswim: A verb (less common) meaning to swim on one's back, though this is not specific to the insect.
• Water boatman: A different, non-predatory aquatic insect often confused with the backswimmer.

Synonyms

• Water wasp (a common name due to its painful bite).
• Notonectid (scientific/adjective form).

Notes on Different Meanings

• "Backswimmer" has a single, specific zoological meaning. It does not commonly refer to a human swimmer who uses the backstroke, though this could be a possible, highly contextual interpretation. The primary and almost exclusive meaning is the insect.

Học thuật

Noun

1. predaceous aquatic insect that swims on its back and may inflict painful bites

Từ đồng nghĩa

• notonecta undulata