noun, noun or participle which takes 'suru', intransitive verb
one turn; spinning around
Literal physical rotation: a single turn or revolution. Often used in sports, dance, or mechanical descriptions.
フィギュアスケートで、選手が一転して観客を魅了した。
In figure skating, the athlete spun around once and captivated the audience.
noun, noun or participle which takes 'suru', transitive verb, intransitive verb, adverb
Abstract change: a sudden, dramatic shift in situation, opinion, policy, or weather. Common in news reports. Can be used as a noun, suru-verb (intransitive/transitive), or adverbially.
状況は一転して、彼らが有利になった。
The situation completely reversed, and they gained the advantage.
彼は態度を一転させた。
He did an about-face on his attitude.
天気が一転、激しい雨になった。
The weather suddenly changed to heavy rain.