**Question:** Who coined the term "anaesthesia"?

**Core Concept:** Anaesthesia is the medical practice of inducing temporary loss of sensation, primarily for pain control during medical procedures.

**Why the Correct Answer is Right:** The correct answer, **C. William G. Thornton**, is credited with coining the term "anaesthesia" in 1846. He coined the term from the Greek words "a" meaning "not" and "anaesthesia," meaning "without feeling." The term was chosen to represent the primary goal of anaesthesia: preventing or reducing pain during medical procedures.

**Why Each Wrong Option is Incorrect:**

A. **William Hunter** (1718-1783) was a Scottish physician, known for his anatomical studies, but he did not coin the term "anaesthesia."
B. **William Gaskell** (1766-1838) was an English physician, but he is not credited with coining the term.
D. **William Thomas Green Morton** (1819-1868) is famous for his role in the first successful general anaesthetic administration during a tooth extraction, using ether, but not for coining the term.

**Clinical Pearl / High-Yield Fact:** A notable anaesthesiologist, **Dentist Charles T. Jackson**, is often credited with administering the first general anaesthetic during a tooth extraction on October 16, 1846, in the same procedure where Morton used ether, but Morton is the one who popularized the term "anaesthesia."

**Correct Answer:** C. William G. Thornton