Merriam-Webster's Word of the Day for September 22, 2023 is:

mesmerize • \MEZ-muh-ryze\  • verb

Mesmerize means "to hold the attention of someone entirely; to interest or amaze someone so much that nothing else is seen or noticed." The word is often used in the phrase "be mesmerized."

// The crowd was mesmerized by the flawlessly synchronous movements of the acrobats.

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Examples:

"Yep, Ruth [Handler] ended up naming two of her iconic dolls after her kids. The idea for Barbie and Ken stemmed from a family Europe trip in 1956.... Barbara, then still a teenager, saw a doll that looked like an adult woman in a store window in Switzerland and was mesmerized." — Korin Miller, Women's Health, 21 July 2023

Did you know?

Experts can’t agree on whether Franz Anton Mesmer (1734-1815) was a quack or a genius, but all concede that the Swabian physician's name is the source of the word mesmerize. In his day, Mesmer was the toast of Paris, where he enjoyed the support of notables including Queen Marie Antoinette. He treated patients with therapeutic procedures (called, appropriately enough, mesmerism) involving what he claimed was a mysterious force termed animal magnetism. (Many believe that mesmerism was what we now call hypnotism). Accordingly, the verb mesmerize was first used to mean "to subject to mesmerism" before broadening to be synonymous with hypnotize, and later to mean "to amaze or captivate."