Definition

1. Noun:
   • An endocrine gland: A ductless gland is any of the glands of the endocrine system that secrete hormones directly into the bloodstream rather than through a duct.

Usage

• The term "ductless gland" is used in biological and medical contexts to describe a specific type of gland. It is a formal, technical term.

Examples

• Noun:
  • The pituitary is a crucial ductless gland that regulates many bodily functions.
  • Unlike salivary glands, ductless glands release their secretions into the circulatory system.

Advanced Usage

• "The ductless glands": This plural form collectively refers to the endocrine system.
  • The ductless glands work together to maintain the body's homeostasis.

Variants and Related Words

• Endocrine gland (n): A direct synonym for ductless gland.
  • The thyroid is an endocrine gland located in the neck.

Synonyms

• Endocrine gland: A gland that secretes hormones directly into the blood.
• Endocrine organ: An organ that functions as a ductless gland.

Related Phrases

• Gland of internal secretion: An older, less common term for a ductless gland.
  • Historically, the pancreas was not initially recognized as a gland of internal secretion.

Noun

1. any of the glands of the endocrine system that secrete hormones directly into the bloodstream