adj. 作废的；被取代的
v. 克制；取代；废弃（supersede的过去分词）

Supersede \Su`per*sede"\, v. t. [imp. & p. p. {Superseded}; p.
pr. & vb. n. {Superseding}.] [L. supersedere, supersessum, to
sit above, be superior to, forbear, omit; super above +
sedere to sit: cf. F. supers['e]der. See {Sit}, and cf.
{Surcease}.]
1. To come, or be placed, in the room of; to replace.

2. To displace, or set aside, and put another in place of;
as, to supersede an officer.

3. To make void, inefficacious, or useless, by superior
power, or by coming in the place of; to set aside; to
render unnecessary; to suspend; to stay.

Nothing is supposed that can supersede the known
laws of natural motion. --Bentley.

4. (Old Law) To omit; to forbear.