barbiturate. The American Heritage® Dictionary of the English Language: Fourth Edition. 2000.

The American Heritage^® Dictionary of the English Language: Fourth Edition. 2000.

barbiturate

SYLLABICATION:	bar·bi·tu·rate
PRONUNCIATION:	bär-bchr-t, --rt, bärb-trt, -t, -tyr-, bär-bch-wt
NOUN:	1. A salt or ester of barbituric acid. 2. Any of a group of barbituric acid derivatives that act as central nervous system depressants and are used as sedatives or hypnotics.
ETYMOLOGY:	barbitur(ic acid) + –ate².
USAGE NOTE:	When this class of drugs was introduced in the early part of this century, barbiturate had its main stress on the penultimate syllable, a pronunciation that is still used in the medical profession. As the word passed into the general vocabulary the stress shifted to the antepenultimate syllable, bringing the stress pattern more in line with words like acculturate, accurate, and saturate. Either pronunciation is considered correct now. Since at least the 1960s the pronunciation (bär-bch-wt), without the second r, has been considered nonstandard despite the fact that it is quite common. In a recent survey 62 percent of the Usage Panel still disapprove of this pronunciation, while 38 percent approve of it, suggesting that the usage is becoming less stigmatized. One reason for this may be that the pronunciation without the second r is simply easier to say, since the combination (-r-t) occurs relatively infrequently in English. In addition, the presence of the first r may influence the dropping out of the second r by the phonological process of dissimilation.


The American Heritage^® Dictionary of the English Language, Fourth Edition. Copyright © 2000 by Houghton Mifflin Company. Published by the Houghton Mifflin Company. All rights reserved.