dot1 /dɒt $ dɑːt/ ●●● S2 noun [countableC]2 on the dot informalTIME/AT A PARTICULAR TIME exactly on time or at a particular time 在指定時間,準時I’ll be there on the dot. 我會準時到那裏。
at three o'clock/seven thirty etc on the dot (=at exactly 3:00/7:30 etc) 正好3點/7點30分等Mr Green arrived at six on the dot. 格林先生正好在6點到達。
arrived ... on the dot• Matthew arrived on the dot of seven.
3 FARsomething that looks like a small spot because it is so far away 〔因相距很遠〕看似一個小點的物體The plane was just a dot on the horizon. 飛機當時只是地平線上的一個小點。
→ the year dot at year(14)