Word of the Day: STRESSPronunciation:UK/stres/ or US/stres/

Meaning:
As a medical or psychological term, stress is a state of mental or emotional strain resulting from adverse or demanding circumstances.

In physics and engineering, it refers to the pressure or force exerted on a material object. In linguistics, it is the emphasis given to a syllable or word in speech.

Example for daily usage:

• "Chronic work-related stress is a major contributing factor to high blood pressure and cardiovascular disease."
• "The structural engineer calculated the amount of stress the bridge could withstand before the steel would bend."
• "If you put too much stress on that old wooden shelf, it is going to snap under the weight."

Origin and history:
The word has a fascinating journey from the physical world to the psychological one. It developed as a shortening of the Old French word estresse, meaning "narrowness," "oppression," or "distress," which itself came from the Latin strictus (meaning "drawn tight" or "bound").

For centuries, stress was purely an engineering term used to describe physical weight and strain placed upon buildings, beams, and metals. It wasn't until 1936 that endocrinologist János Selye borrowed the term from physics to describe the biological "strain" felt by the human body under difficult conditions, creating the modern medical definition we use today.

Also read | Word of the Day, May 16: 'Pellucid'

Cultural significance and modern usage:
On World Hypertension Day, stress takes on a critical cultural and medical focus. In modern society, "being stressed" is a near-universal experience. Medically, it is known as a "silent killer" because emotional stress triggers the body's fight-or-flight response, constricting blood vessels and causing a sharp rise in blood pressure (hypertension).

Interesting facts:

The Physics Flip: When Hans Selye first used the word in medicine, his English wasn't perfect. He actually meant to use the engineering term strain (the deformation caused by pressure), but he used stress (the force causing the pressure) instead. The medical world stuck with his mistake!

The Good Stress: Not all stress is bad. Psychologists use the word eustress (using the Greek prefix eu- meaning "good") to describe positive, motivating stress, like the excitement felt before going on a roller coaster or starting a new job.