revolutionary

B2 · Upper Intermediate

adj. completely new and having a great effect on how something is done.

adj. involving or causing a complete or dramatic change in a system, method, or mindset.

日本語:画期的※

“The invention of the smartphone was a revolutionary moment in human history.”

“The scientist proposed a revolutionary theory that challenged the fundamental laws of physics as they were understood at the time.”

C2 · Proficiency Science Technical

adj. moving in a circle around a central point.

adj. relating to or engaged in the act of revolving or circular motion.

“The revolutionary motion of the planets around the sun takes different amounts of time.”

“The engineer calculated the revolutionary speed of the turbine to ensure it would not exceed the structural limits of the casing.”

B2 · Upper Intermediate Countable noun

n. someone who starts or takes part in a political revolution.

n. a person who advocates or engages in political revolution.

“He was a famous revolutionary who spent years fighting for his country's freedom.”

“History remembers her as a dedicated revolutionary who refused to compromise her ideals even when faced with life imprisonment.”

C1 · Advanced Countable noun Music Informal

n. a famous and difficult piece of piano music by Frédéric Chopin.

n. a common informal reference to Chopin's Étude Op. 10, No. 12 in C minor.

“She practiced the Revolutionary for hours to master the fast left-hand part.”

“The pianist chose to close the first half of the recital with the Revolutionary, showcasing his technical command of the etude's stormy passages.”