side effect
nounDefinition of side effect
: a secondary and usually adverse effect (as of a drug)
toxic side effects
— called also side reaction
Examples of side effect in a Sentence
Nausea and diarrhea are the side effects of the drug.
the harmful side effects of using chemicals to kill insects
The merger created positive side effects for both companies.
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Recent Examples on the Web
The company will test three doses of the gene editing-machinery, treating one eye at a time for safety reasons, to see which dose provides the best results and fewest side effects, Albright says. — Karen Weintraub, Scientific American, "Despite Controversy, Human Studies of CRISPR Move Forward in the U.S.," 13 Aug. 2019 The effectiveness and potential side effects of medicines can also vary depending on someone’s genetic ethnicity, and can lead to great disparities in health. — William Thornton | Wthornton@al.com, al, "Acclinate Genetics wants diversity in clinical research," 9 Aug. 2019 Done in the hands of a professional dermatologist, there should be zero to minimal pain, side effects, or down time from microneedling treatments, though some may experience minor skin irritation immediately after. — April Franzino, Good Housekeeping, "What Is Microneedling — and Is It Safe?," 29 July 2019 Rivas was nervous before the appointment, but the doctor was familiar with microdosing and explained the possible risks and side effects, which put Rivas at ease. — NBC News, "Neither male nor female: Why some nonbinary people are 'microdosing' hormones," 13 July 2019 The first trailer has been released for Rabid, the remake of David Cronenberg’s 1977 horror film about a woman whose experimental surgical operation comes with some, let’s say, interesting side effects. — Clark Collis, EW.com, "Rabid remake gets disturbing first trailer," 4 July 2019 Vaccines are considered safe and effective for most people, and serious side effects are rare. — Jackie Borchardt, Cincinnati.com, "Not vaccinated? A new Ohio bill could prevent you from being fired for refusing immunizations," 14 June 2019 The risks and side effects are minimal with an injectable treatment to combat forehead wrinkles. — Maggie Maloney, Town & Country, "Everything You Need to Know About Treating Forehead Wrinkles," 11 June 2019 The disease can lead to vision loss, disfigurement, and other life-threatening side effects. — Christina Oehler, Health.com, "‘Butterfly Children’ Disease Causes This Boy’s Skin to Look Burned and Blistered," 10 June 2019These example sentences are selected automatically from various online news sources to reflect current usage of the word 'side effect.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
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