Definition

1. Adjective:

   • Relating to or consisting of milk: Describes something that is connected to, made of, or resembles milk.
   • Producing milk: Pertaining to organs or vessels that produce or convey a milky fluid.

2. Noun:

   • A lymphatic vessel in the small intestine: Specifically refers to one of the tiny vessels in the villi of the small intestine that absorb dietary fats in the form of chyle, a milky fluid, and transport it to the lymphatic system.

Usage Examples

• Adjective:

  • The lacteal secretion is essential for newborn mammals. (The milky secretion is essential for newborn mammals.)
  • Under the microscope, the fluid had a lacteal appearance. (Under the microscope, the fluid had a milky appearance.)

• Noun:

  • Fats are absorbed into the bloodstream via the lacteals in the intestinal wall. (Fats are absorbed into the bloodstream via the lymphatic vessels in the intestinal wall.)
  • The lacteal is a crucial part of the lymphatic system associated with digestion. (The lymphatic vessel is a crucial part of the lymphatic system associated with digestion.)

Advanced Usage

• In a biological context: The term is highly specialized and primarily used in anatomy, physiology, and medicine to describe structures and processes related to the absorption of fats.
  • The pathologist noted the dilation of the lacteals in the biopsy sample. (The pathologist noted the enlargement of the fat-absorbing lymphatic vessels in the biopsy sample.)

Variants and Related Words

• Lactate (verb): To secrete milk.
  • Mammals lactate to feed their young.
• Lactation (noun): The process of producing and secreting milk.
  • Lactation is stimulated by specific hormones.
• Lactic (adjective): Relating to or derived from milk, especially in the context of acid.
  • Lactic acid is produced in muscles during intense exercise.

Synonyms

• Adjective: Milky, lacteous.
• Noun: Intestinal lymphatic vessel, chyliferous vessel.

Notes on Meaning

• The adjective form generally describes a quality (milky) or a function (milk-producing/conveying).
• The noun form is a highly specific anatomical term. In common language, the adjective is more likely to be encountered than the noun.

Adjective

1. relating to or consisting of or producing or resembling milk
   • lacteal fluids
   • lacteal organs

Noun

1. any of the lymphatic vessels that convey chyle from the small intestine to the thoracic duct