Cortisol
noun /ˈkɔːr.tɪ.sɒl/ — The stress hormone associated with chronic stress and long-term pressure
Definition
A steroid hormone released by the adrenal glands in response to stress and low blood glucose. While adrenaline handles acute stress, cortisol manages chronic stress — and its sustained elevation has significant health implications.
Beyond the definition
Cortisol is stress made chemical — the body's long-duration response to pressure that doesn't let up. It's the word for what sustained modern anxiety actually does to a physical body over time.
Origin & history
Latin: cortex (outer bark, outer layer) — from the adrenal cortex that produces it. Named for its site of production rather than its function. Identified and named in the 1950s.
Example sentences
Illustrative sentences for learning, not verified community posts or sourced quotations.
Her cortisol levels were chronically elevated — the blood work confirmed what her exhaustion suggested.
High cortisol impairs memory, immunity, and sleep — the trifecta of stress consequences.
Understanding cortisol changed how she thought about her body's responses to her working life.
How to use it
This entry uses a noun. Follow the examples for articles and singular or plural forms; not every noun takes “a” or “an.”
Choose “Cortisol” when the meaning fits your context: A steroid hormone released by the adrenal glands in response to stress and low blood glucose. While adrenaline handles acute stress, cortisol manages chronic stress — and its sustained elevation has significant health implications.
Synonyms
stress hormone, hydrocortisone
Antonyms
calm response
Related words
Cortisol vs adrenaline
Adrenaline triggers an immediate, short-term fight-or-flight burst. Cortisol is the primary stress hormone that manages long-term stress and regulates metabolism.
Word in the Wild
See how this word appears in life, language and stories.
Illustrative sentences and imagined stories for learning — not verified sightings, interviews, or sourced quotations.
Fictional scene
Deterioration Through Sustained Exposure
A wooden chair is reclaimed by forest vines and mushrooms in soft light.
The slow, dignified decay of the chair represents the long-term effects of environmental exposure, analogous to cortisol’s management of chronic stress. Like the chair’s gradual surrender to the elements, cortisol levels reflect the body’s sustained adjustment over extended periods.
Image credit: Wordspun · AI-generated conceptual illustration
Questions about this word
What does "Cortisol" mean?
Cortisol is noun meaning: The stress hormone associated with chronic stress and long-term pressure. A steroid hormone released by the adrenal glands in response to stress and low blood glucose. While adrenaline handles acute stress, cortisol manages chronic stress — and its sustained elevation has significant health implications.
Where does the word "Cortisol" come from?
Latin: cortex (outer bark, outer layer) — from the adrenal cortex that produces it. Named for its site of production rather than its function. Identified and named in the 1950s.