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cephalexin

American  
[sef-uh-lek-sin] / ˌsɛf əˈlɛk sɪn /

noun

Pharmacology.

  1. an oral, antimicrobial drug, C 16 H 7 N 3 O 4 S, used in treating minor respiratory and urinary tract infections and as a backup or alternative to penicillin treatment.

Etymology

Origin of cephalexin

1965–70; cephal(osporin) + -ex- of unclear derivation + -in 2

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.

Orthopedist No. 3 put me on sulfamethoxazole/trimethoprim and cephalexin, which seemed to work, or so I convinced myself.

From Scientific American • Jul. 20, 2021

Doctors have grown used to prescribing antibiotics like oxacillin or cephalexin in that situation.

From Time Magazine Archive

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.