discovered or determined by scientific observation; "variation in the ascertained flux depends on a number of factors"; "the discovered behavior norms"; "discovered differences in achievement"; "no explanation for the observed phenomena"
having once lived or existed or taken place in the real world as distinct from being legendary; "the historical Jesus"; "doubt that a historical Camelot every existed"; "actual historical events"
of or relating to the study of history; "historical scholars"; "a historical perspective"
endorsed authoritatively as having met certain requirements; "a certified public accountant"
holding appropriate documentation and officially on record as qualified to perform a specified function or practice a specified skill; "a registered pharmacist"; "a registered hospital"
having quality or payment or delivery guaranteed; "certified milk"; "certified check"; "certified mail"
repeat after memorization; "For the exam, you must be able to regurgitate the information"
feed through the beak by regurgitating previously swallowed food; "many birds feed their young by regurgitating what they have swallowed and carried to the nest"
pour or rush back; "The blood regurgitates into the heart ventricle"
the act of protesting; a public (often organized) manifestation of dissent
a formal and solemn declaration of objection; "they finished the game under protest to the league president"; "the senator rose to register his protest"; "the many protestations did not stay the execution"
the act of making a strong public expression of disagreement and disapproval; "he shouted his protests at the umpire"; "a shower of protest was heard from the rear of the hall"
utter words of protest
affirm or avow formally or solemnly; "The suspect protested his innocence"
express opposition through action or words; "dissent to the laws of the country"
prevent from doing something or being in a certain state; "We must prevent the cancer from spreading"; "His snoring kept me from falling asleep"; "Keep the child from eating the marbles"
keep from happening or arising; make impossible; "My sense of tact forbids an honest answer"; "Your role in the projects precludes your involvement in the competitive project"