paclitaxel

noun

pac·​li·​tax·​el ˌpa-kli-ˈtak-sᵊl How to pronounce paclitaxel (audio)
: an antineoplastic drug C47H51NO14 originally derived from the bark of the Pacific yew but now typically derived as a semisynthetic product of the English yew and used to treat ovarian cancer

Example Sentences

Recent Examples on the Web The survival rate was not much better for women given Abraxane than for those given paclitaxel. The New Yorker, 25 Oct. 2021 Generic paclitaxel, dissolved in the castor-oil derivative, the article said, cost one-twenty-fifth as much. The New Yorker, 25 Oct. 2021 The introduction of taxanes like paclitaxel and docetaxel marked a significant advance in treatment. Richard Ghalie, STAT, 26 Dec. 2019 Researchers randomly assigned 1,274 people with advanced disease to receive one of two kinds of chemotherapy — either paclitaxel (marketed as Taxol) plus carboplatin or pemetrexed (marketed as Alimta) plus carboplatin — or Keytruda. Melissa Healy, latimes.com, 5 June 2018 Doctors debate whether any advantages of Abraxane merit the extra cost compared with generic paclitaxel. Andrew Pollack, New York Times, 23 May 2016

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'paclitaxel.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

Etymology

Pacific yew + -litax- (perhaps from Taxus brevifolia) + -el (alteration of -ol entry 1 or -ol entry 3)

First Known Use

1992, in the meaning defined above

Time Traveler
The first known use of paclitaxel was in 1992

Dictionary Entries Near paclitaxel

Cite this Entry

“Paclitaxel.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/paclitaxel. Accessed 5 Dec. 2022.

Medical Definition

paclitaxel

noun

pac·​li·​tax·​el ˌpak-li-ˈtak-səl How to pronounce paclitaxel (audio)
: an antineoplastic agent C47H51NO14 that was originally derived from the bark of a yew tree (Taxus brevifolia of the family Taxaceae) of the western United States and British Columbia but that is now typically derived as a semisynthetic product of the English yew (T. baccata) and is used to treat ovarian cancer which has not responded to conventional chemotherapy see taxol
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