Common Meanings
1
dìng定
Fixed; settled; unchanging; to set or determine (a price, date, rule, etc.).
我们已经为新产品定下了合理的价格。
We have already set a reasonable price for the new product.
To fix, decide, or stabilize something; to make it unchangeable.
我们已经决定了旅行的路线。
We have already decided on the travel route.
Stable; peaceful; settled (often describing a situation or general state).
经过长时间的混乱，一切终于安定下来。
After a long period of chaos, everything finally settled down.
Calm, stable, or settled (often referring to emotions or state of mind), as in '心神不定' (restless, uneasy).
她最近总是心神不定，不知道是不是有什么烦心事。
She's been feeling restless lately; I wonder if something is troubling her.
certain; fixed; stable; calm; to decide; to determine
请你保持镇定，不要慌张。
Please stay calm and don't panic.
To agree upon or decide in advance; to order or customize.
我们已经定好了下个月的见面时间。
We have already set the meeting time for next month.