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methotrexate

American  
[meth-oh-trek-seyt] / ˌmɛθ oʊˈtrɛk seɪt /

noun

Pharmacology.
  1. a toxic folic acid analogue, C 2 0 H 2 2 N 8 O 5 , that inhibits cellular reproduction, used primarily in the treatment of psoriasis and certain cancers and as an immunosuppressive agent.


methotrexate British  
/ ˌmɛθəʊˈtrɛkseɪt, ˌmiːθəʊ- /

noun

  1. an antimetabolite drug used in the treatment of certain cancers. Formula: C 20 H 22 N 8 O 5

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

methotrexate Scientific  
/ mĕth′ə-trĕksāt /
  1. A toxic drug that acts as a folic acid antagonist to interfere with cellular reproduction and is used in the treatment of psoriasis, certain cancers, and certain inflammatory diseases, such as rheumatoid arthritis. Chemical formula: C 20 H 22 N 8 O 5 .


Etymology

Origin of methotrexate

1950–55; metho(xy)- + trexate, of unclear derivation

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Doctors only gave Thurman a methotrexate injection, a medication treatment, when her OB-GYN went to the hospital and spoke to the staff in person on her fourth visit to the emergency room.

From Salon May 26, 2026

The researchers also showed that the gamma treatment improved the signs of chemo brain in mice that received a different chemotherapy drug, methotrexate, which is used to treat breast, lung, and other types of cancer.

From Science Daily Mar. 6, 2024

It so happened that this company was supplying the U.S. with half of its cisplatin, half of its methotrexate, 20 percent of its carboplatin.

From Slate Jul. 9, 2023

When Isabella’s second cycle of treatment began June 5, clinicians advised that she would be getting less than the full dose because of a methotrexate shortage, said her father, Brent.

From Scientific American Jun. 21, 2023

The oncologist will probably come in to ask you some questions before we start the methotrexate.

From "Drums, Girls, and Dangerous Pie" by Jordan Sonnenblick

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