Briton appearing occasionally in short history (3)

I believe the answer is:

bio

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'short history' is the definition.
(I've seen this in another clue)

I don't understand the remainder of the clue.

(Other definitions for bio that I've seen before include "brief history" , "Life story (abbr)" , "Prefix denotes living things" , "A life's work" , "Prefix denoting life" .)

I've seen this clue in The Times.

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