Cholesterol Meaning and Definition

Pronunciation

/ˈkɒlɪsˌtɪərəl/ 🔊

Part of Speech

Noun

Definition

A type of fat found in the bloodstream and tissues of animals, comprising both high-density lipoprotein (HDL) and low-density lipoprotein (LDL) cholesterol, with excessive levels being a major risk factor for cardiovascular disease.

Examples

• The doctor tested her cholesterol levels to determine her risk of heart disease.
• Eating a balanced diet with low cholesterol can help reduce the risk of cardiovascular disease.

Synonyms

• Fat
• Triacylglycerol

Antonyms

• Saturated fat
• Affordable

Additional Information

Cholesterol is an essential component of cell membranes, but high levels can lead to the buildup of plaque in arteries, increasing the risk of heart disease and strokes. Factors that contribute to high cholesterol levels include genetics, diet, and lack of exercise.

LDL cholesterol is often referred to as “bad” cholesterol, as it can accumulate in the walls of arteries and contribute to plaque buildup, while HDL cholesterol is considered “good” cholesterol, as it helps remove excess cholesterol from the bloodstream and transport it to the liver for excretion.

Etymology

From ancient Greek χολή (cholē), “bile”, and στερεός (stereos), “solid”, as cholesterol was first isolated from gallstones (choleliths) and believed to have a solid, cheesy consistency.

Usage Notes

Cholesterol is often used as a singular noun, but it can also be referred to as a plural noun (e.g., “cholesterols”) when referring to multiple forms or fractions.

Cultural References

• The term “cholesterol” has been mentioned in numerous TV shows and movies, such as “House M.D.”, “Grey’s Anatomy”, and “The Big Bang Theory”, often in relation to medical diagnoses or health concerns.

Idiomatic Expressions or Phrases

• “High cholesterol” is often used as a metaphor for excessive worry or anxiety.

Related Words or Phrases

• HDL cholesterol
• LDL cholesterol
• Triglycerides

Collocations

• “High cholesterol levels”
• “Low cholesterol count”

Frequency of Use

Cholesterol is a commonly used term in medical and scientific contexts, particularly in discussions of cardiovascular health and disease prevention.

Common Misspellings

• Cholistril
• Cholestrl