シーイングシーイングMeanings1nounseeingAstronomical term for the steadiness or clarity of the atmosphere, affecting telescopic observation. Often used in contexts like シーイングが良い/悪い.今こん夜やはシーイングが悪わるくて、星ほしがぼやけて見みえる。Tonight the seeing is poor, so the stars look blurry.
