Definition

Noun: - A family of ancient, palmlike plants closely related to ferns, characterized by fertilization via spermatozoids: This term refers to a specific botanical family of gymnosperms. These plants are notable for their primitive reproductive method, which involves motile sperm cells (spermatozoids), a trait they share with ferns. They have a stout, woody trunk and a crown of large, pinnate leaves, giving them a superficial resemblance to palms or tree ferns.

Usage Examples

• Noun:
  • The family Cycadaceae includes some of the most ancient seed plants on Earth.
  • Botanists study the family Cycadaceae to understand early plant evolution.
  • A key characteristic of the family Cycadaceae is fertilization by spermatozoids.

Advanced Usage

• In taxonomic context: Used to specify a particular rank (family) within the order Cycadales.
  • The genus Cycas is classified within the family Cycadaceae.

Variants and Related Words

• Cycadaceae: The standard, non-prefixed form of the taxonomic family name.
  • Cycadaceae are often found in tropical and subtropical regions.
• Cycad (n): A common name for any plant belonging to the order Cycadales, which includes the family Cycadaceae.
  • Many cycads are endangered in the wild.
• Cycas (n): The type genus of the family Cycadaceae.
  • Cycas revoluta is a popular ornamental species.

Synonyms

• Cycad family: A common descriptive synonym.
  • The cycad family is known for its slow growth.

Related Terms (Not Synonyms)

• Gymnosperm (n): The larger group of seed plants to which the family Cycadaceae belongs.
• Spermatozoid (n): The motile male gamete, a defining feature in the reproduction of this family.
• Fern (n): A group of plants to which cycads are distantly related, sharing the primitive trait of spermatozoid-based fertilization.

Noun

1. ancient palmlike plants closely related to ferns in that fertilization is by means of spermatozoids