luminous /ˈlu:minəs/ adj. 发光的，发亮的，夜光的：a luminous body 发光体；luminous intensity 发光强度；luminous paint 发光油漆/涂料 ［考句］ I bought an alarm clock with a luminous dial, which can be seen clearly in the dark.我买了一个带发光钟面的闹钟，这样在黑暗中也能看清。