a.

1. 残留的；剩余的

n.

1. 残余；【数】剩余
2. （常复数）（电视节目、广告、影片等重播时付给演员、作者和导演的）重播费
3. （常复数）【医】后遗症

adj.

1. remaining after the greater part or quantity has gone or been subtracted.
   ▸(of a physical state or property) remaining after the removal of or present in the absence of a causative agent.
2. (of an experimental or arithmetical error) not accounted for or eliminated.
3. (of a soil or other deposit) formed in situ by weathering.

n.

1. a residual quantity.
2. a difference between a value measured in a scientific experiment and the theoretical or true value.
3. a royalty paid to a performer or writer for a repeat of a play, television show, or advertisement.
4. Geology  a portion of rocky or high ground remaining after erosion.
5. the resale value of a new car or other item at a specified time after purchase.