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definitions

ampicillin

[am-puh-sil-in]
SEE MORE SYNONYMS FOR ampicillin ON THESAURUS.COM

noun Pharmacology.

a broad-spectrum semisynthetic penicillin, C16H19N3O4S, effective against certain susceptible Gram-positive and Gram-negative bacteria.

RELATED WORDS

penicillin, amoxicillin, tetracycline, erythromycin, streptomycin, sulfonamide

Nearby words

  1. amphoteric,
  2. amphotericin,
  3. amphotericin b,
  4. amphoterism,
  5. amphotropic virus,
  6. ample,
  7. amplexicaul,
  8. amplexifoliate,
  9. amplexus,
  10. ampliate

Origin of ampicillin

First recorded in 1965–70; probably am(inobenzyl)p(en)icillin, an alternate chemical name
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for ampicillin

ampicillin

noun

a semisynthetic penicillin used to treat various infections
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
Medicine definitions for ampicillin

ampicillin

[ăm′pĭ-sĭl′ĭn]

n.

A semisynthetic penicillin having a broader antibacterial spectrum of action than that of penicillin G. It is effective against gram-negative and gram-positive bacteria and used to treat gonorrhea and infections of the intestinal, urinary, and respiratory tracts.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Science definitions for ampicillin

ampicillin

[ăm′pĭ-sĭl′ĭn]

An antibiotic derived from penicillin that has a broad antibacterial spectrum of action. It is effective against gram-negative and gram-positive bacteria and is used primarily to treat gonorrhea and infections of the respiratory, urinary, and intestinal tracts.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.