UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˌsuːpərˈsiːd/US:USA pronunciation: IPA and respellingUSA pronuncation: IPA/ˌsupɚˈsid/ ,USA pronunciation: respelling(so̅o̅′pər sēd)

Inflections of 'supersede' (v): (⇒ conjugate)
v 3rd person singular
v pres pverb, present participle: -ing verb used descriptively or to form progressive verb--for example, "a singing bird," "It is singing."
v pastverb, past simple: Past tense--for example, "He saw the man." "She laughed."
v past pverb, past participle: Verb form used descriptively or to form verbs--for example, "the locked door," "The door has been locked."

WordReference Random House Learner's Dictionary of American English © 2020
su•per•sede /ˌsupɚˈsid/USA pronunciation   v. [+ object], -sed•ed, -sed•ing. 
  1. to take the place of (another), as by having more power, authority, effectiveness, etc.:This new drug will supersede all others.
  2. to set (something, as a regulation) aside as being no longer in force:This new regulation concerning import fees supersedes the old one.

WordReference Random House Unabridged Dictionary of American English © 2020
su•per•sede  (so̅o̅′pər sēd),USA pronunciation v.t.,  -sed•ed, -sed•ing. 
  1. to replace in power, authority, effectiveness, acceptance, use, etc., as by another person or thing.
  2. to set aside or cause to be set aside as void, useless, or obsolete, usually in favor of something mentioned;
    make obsolete:They superseded the old statute with a new one.
  3. to succeed to the position, function, office, etc., of;
su′per•seda•ble, adj. 
su′per•seder, n. 
  • Latin supersedēre to sit above or upon, forbear, equivalent. to super- super- + sedēre to sit1
  • 1485–95
    • 1.See corresponding entry in Unabridged See  replace. 
    • 2.See corresponding entry in Unabridged void, overrule, annul, revoke, rescind.

Collins Concise English Dictionary © HarperCollins Publishers::
supersede /ˌsuːpəˈsiːd/ vb (transitive)
  1. to take the place of (something old-fashioned or less appropriate); supplant
  2. to replace in function, office, etc; succeed
  3. to discard or set aside or cause to be set aside as obsolete or inferior
Etymology: 15th Century: via Old French from Latin supersedēre to sit above, from super- + sedēre to sit

ˌsuperˈsedence n supersedure /ˌsuːpəˈsiːdʒə/ n supersession /ˌsuːpəˈsɛʃən/ n
'supersede' also found in these entries:
Collocations: supersede [all prior, all other, the competition], [he, this drug, the team] will supersede all [others], the [policy, regulation, law] supersedes the previous, more...

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