Definition

1. Adjective:
   • Lacking a tail or taillike appendage: Describes an organism or structure that does not possess a tail or any appendage resembling a tail.

Usage

• The word "acaudal" is a specialized biological and anatomical term. It is primarily used in scientific contexts, such as zoology, comparative anatomy, or embryology, to describe species or developmental stages that are naturally tailless.
• It is the direct antonym of "caudate" (having a tail).
• It is a formal, technical adjective and is not commonly used in everyday conversation.

Examples

• Adjective:
  • Humans and other great apes are acaudal primates.
  • The acaudal embryo showed no development of a tail bud.
  • Frogs are acaudal as adults, though they possess tails as tadpoles.

Advanced Usage

• The term can be used in a comparative sense within evolutionary biology or taxonomy to highlight a distinguishing characteristic.
  • The fossil record suggests this lineage became acaudal approximately 25 million years ago.

Variants and Related Words

• Acaudate (adj.): A synonym with identical meaning ("lacking a tail").
  • The researcher noted the acaudate condition of the specimen.
• Caudal (adj.): Pertaining to the tail or the posterior part of the body.
• Caudate (adj.): Having a tail or a tail-like appendage.

Synonyms

• Tailless
• Anurous (specifically for tailless amphibians like frogs and toads)

Antonyms

• Caudate
• Tailed

Adjective

1. lacking a tail or taillike appendage