octopod

Thân thiện

An octopod clings to a colorful coral reef.

Definition

Noun: 1. A cephalopod mollusk characterized by having eight arms: An octopod is a type of marine animal belonging to the class Cephalopoda, order Octopoda. Its defining feature is a soft, sac-like body and eight muscular arms, each typically lined with suckers. Unlike squids or cuttlefish, most octopods lack any internal shell or hard structure.

Examples of Usage

• The diver observed a camouflaged octopod hiding among the coral.
• An octopod can use its remarkable intelligence to solve simple puzzles in laboratory settings.
• The aquarium's exhibit features a giant Pacific octopod.

Advanced Usage

• Scientific/Technical Context: In marine biology texts, "octopod" is used as a standard term for any member of the order Octopoda, which includes both the common octopus and deeper-sea species.
  • The study focused on the neural anatomy of the benthic octopod.

Variants and Related Words

• Octopoda (n): The biological order to which all octopods belong.
• Octopus (n): The most common and familiar type of octopod. While "octopus" is often used interchangeably with "octopod" in general language, "octopod" is the broader categorical term.
• Cephalopod (n): The larger class of mollusks that includes octopods, squids, cuttlefish, and nautiluses.

Synonyms

• Eight-armed cephalopod: A descriptive synonym emphasizing the primary physical characteristic.
• (Commonly) Octopus: In everyday, non-scientific language.

Related Phrases/Idioms

(This word is a specific zoological term and is not commonly used in idiomatic expressions. Its common variant, "octopus," appears in metaphors, e.g., "the octopus of bureaucracy.")

Học thuật

Noun

1. a cephalopod with eight arms but lacking an internal shell