Definition

Noun: * A tall, coarse annual weed: Ambrosia trifida is the scientific name for a specific species of plant commonly known as giant ragweed. It is characterized by its large, rough leaves that are often deeply divided into three or five lobes (three-cleft or five-cleft).

Usage Notes

• This term is primarily used in formal, scientific, or botanical contexts. In everyday conversation, people typically use the common name "giant ragweed."
• It refers specifically to the plant species, not to a general concept or quality.

Examples

• Scientific/Identification Context:
  • The field was overrun with Ambrosia trifida, making it a major source of pollen.
  • Botanists study Ambrosia trifida due to its highly allergenic properties.
• Comparative Context:
  • While common ragweed (Ambrosia artemisiifolia) is smaller, Ambrosia trifida can grow over 15 feet tall.

Advanced Usage

• The name follows the binomial nomenclature system in biology, where is the genus and is the species epithet, often describing a characteristic (here, "three-cleft" leaves).

Variants and Related Words

• Giant Ragweed (n): The most common English name for .
• Ragweed (n): The common name for plants in the genus .
• Annual (n/adj): A plant that completes its life cycle in one year; a key characteristic of .

Synonyms

• Giant Ragweed
• Great Ragweed
• Buffalo Weed (regional)

Different Meanings

• Ambrosia (alone): In classical mythology, "ambrosia" refers to the food or drink of the gods. In botany, it is a genus of flowering plants, most of which are ragweeds. The word uses the botanical meaning.
• Trifida (alone): A Latin-derived botanical term meaning "split into three parts," describing the leaf shape. It is not used independently in modern English.

Noun

1. a coarse annual with some leaves deeply and palmately three-cleft or five-cleft