Originally this word had its main stress on the third syllable (bär´´b-tr´t, -t´´, -tyr´-), a pronunciation that is still used sometimes in medicine. As the word passed into the general vocabulary the stress shifted to the second syllable (bär-bch´r-t, --rt´´), bringing the stress pattern more in line with words like acculturate and saturate. Either way is considered correct now. Since at least the early 1960s the pronunciation (bär-bch´-wt), without the second r, has been considered nonstandard despite the fact that many people pronounce the word that way.
-t
r´
t´´, -ty
r-
