retrorse

/ri'trɔ:s/

Thân thiện

The leaves have small retrorse barbs along their edges.

Definition

1. Adjective:
   • Bent, curved, or directed backward or downward: This term describes something, typically a botanical or biological feature like a hair, spine, bristle, or barb, that is angled or curves backward or downward, opposite to the main direction of growth or orientation.

Usage Examples

• Adjective:
  • The plant's leaves are covered in retrorse prickles, making it difficult to handle.
  • Under the microscope, we observed the retrorse barbs on the seed's surface.

Advanced Usage

• In Botanical Descriptions: The term is almost exclusively used in technical, scientific contexts, particularly in botany, zoology, and mycology, to describe the orientation of appendages.
  • The key identifying feature is the presence of retrorse hairs along the stem.

Variants and Related Words

• Retrorsely (adverb): In a backward or downward-curving manner.
  • The scales are arranged retrorsely along the branch.

Synonyms

• Recurved: Curved backward.
• Reflexed: Bent or turned backward.

Antonyms

• Antrorse: Bent or directed forward or upward.
• Patent: Spreading outward.

Học thuật

Adjective

1. bent or curved backward or downward
   • leaves with retrorse barbs