tiền sống

Một con tiền sống bơi lội trong nước biển.

Definition

1. Noun:
   • Protochordate: A biological term referring to a member of the Protochordata, a group of simple, marine chordate animals that lack a true backbone but possess a notochord at some stage of their development. They are considered evolutionary precursors to vertebrates.

Usage Examples

• Noun:
  • Động vật tiền sống là một nhóm quan trọng trong nghiên cứu tiến hóa. (Protochordates are an important group in evolutionary research.)
  • Bào tử và hải tiêu là những ví dụ về tiền sống. (Lancelets and sea squirts are examples of protochordates.)

Advanced Usage

• This term is used almost exclusively in formal, academic contexts such as zoology, marine biology, and evolutionary studies.

Variants and Related Words

• Động vật tiền sống (n): Protochordate animals. This is the full, more precise term.
• Prochordate (n): An alternative scientific term with the same meaning.

Synonyms

• Protochordate: The direct and most accurate scientific synonym.
• Prochordate: Another accepted scientific term.
• Pre-vertebrate chordate: A descriptive synonym emphasizing its evolutionary position.