haematoidin

Thân thiện

A scientist examines haematoidin crystals under a microscope.

Definition

Noun: 1. An orange-yellow bile pigment: A crystalline, orange-yellow pigment formed in the body as a breakdown product of hemoglobin from red blood cells. It is chemically identical to bilirubin.

Usage Notes

• Medical/Biological Term: "Haematoidin" is a specialized term used primarily in medical and biological contexts to describe this specific metabolic byproduct.
• Context: It is typically used when discussing physiology, pathology (especially concerning blood or liver disorders), or histological examination of tissues.

Examples of Usage

• Noun:
  • Under the microscope, deposits of haematoidin were observed in the old hemorrhage site.
  • The pathologist's report noted the presence of haematoidin crystals, indicating the breakdown of red blood cells.

Advanced Usage

• Chemical Identity: In modern usage, "haematoidin" is understood to be synonymous with bilirubin, particularly when the pigment is found in extrahepatic sites (outside the liver), such as in tissues after internal bleeding.

Variants and Related Words

• Bilirubin (n): The more common clinical term for the same orange-yellow pigment. "Haematoidin" often refers specifically to bilirubin found in tissues.
• Haematoid (adj): Relating to or resembling blood (a related root, but not a direct variant of "haematoidin").

Synonyms

• Bilirubin

Notes on Different Meanings

• This word has a single, precise scientific meaning. It does not have general or idiomatic uses outside of its medical/biological definition.

Học thuật

Noun

1. an orange-yellow pigment in the bile that forms as a product of hemoglobin; excess amounts in the blood produce the yellow appearance observed in jaundice

Từ đồng nghĩa

• bilirubin
• hematoidin