The Collaborative International Dictionary
Supersedeas \Su`per*se"de*as\, n. [L., suspend, set aside, stay,
2d pers. sing. present subjunctive of supersedere. See
Supersede.] (Law)
A writ of command to suspend the powers of an officer in
certain cases, or to stay proceedings under another writ.
--Blackstone.
Douglas Harper's Etymology Dictionary
writ to stay legal proceedings, Latin, literally "you shall desist," second person singular present subjunctive of supersedere "desist, refrain from, forebear" (see supersede).
Wiktionary
n. 1 (context legal English) A type of surety bond that a court requires from an appellant who wants to delay payment of a judgement until the appeal is over. 2 (context legal English) A writ requiring a lower court to suspend an action
Usage examples of "supersedeas".
They will get a writ of habeas corpus, and a stay of proceedings, and a supersedeas, and a new trial and a nolle prosequi, and there you are!
Lord bless you he could rattle through that habeas corpus and supersedeas and all those things for Laura all by himself if he wanted to, when he gets back.