instant/'ɪntstənt/

n. a very short period of time

a. happening immediately

n. [C，常S] 瞬间；片刻：He paused for an instant before continuing. 他暂停了一会儿，然后又继续。

◇I'll be back in an instant. 我一会就回来。

a. [常置于名词前] 立即的，立刻的：The movie is an instant success. 这部电影一炮打响。

◇instant coffee 速溶咖啡

◇instant noodles 方便面（或：即食面）

构词in- + stant (= stand)

同根 circumstance; constant; distant

音组-ant/-ənt/

assistant; constant; distant; instant