pertaining to or affecting antisepsis.
free from or cleaned of germs and other microorganisms.
exceptionally clean or neat.
free of contamination or pollution.


an antiseptic agent.

Origin of antiseptic

First recorded in 1745–55; anti- + septic Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for antiseptic

Contemporary Examples of antiseptic

Historical Examples of antiseptic

  • Crystals of iodine as opposed to permanganate of potash for antiseptic he discussed.

    The Leopard Woman

    Stewart Edward White

  • Hardly an antiseptic, Doctor; wouldn't you say, rather, a cauterizing agent.

    Poisoned Air

    Sterner St. Paul Meek

  • Soap, as an antiseptic, 326;its relation to hard and soft water, 134.

    Rural Hygiene

    Henry N. Ogden

  • Irritant, cathartic, stimulant, and antiseptic; one to one and a half pounds.

  • Compare "antiseptic," "antinomian," "ultramontane," "semicircle."


    Paul Allardyce

British Dictionary definitions for antiseptic



of, relating to, or effecting antisepsis
entirely free from contamination
informal lacking spirit or excitement; clinical


an antiseptic agent or substance
Derived Formsantiseptically, adverb
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

Word Origin and History for antiseptic

1750, coined from anti- "against" + septic. Figurative use by 1820. As a noun meaning "an antiseptic substance" by 1803.

Online Etymology Dictionary, © 2010 Douglas Harper

antiseptic in Medicine




Of, relating to, or producing antisepsis.
Capable of preventing infection by inhibiting the growth of infectious agents.


A substance that inhibits the proliferation of infectious agents.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

antiseptic in Science



A substance that inhibits the proliferation of infectious microorganisms.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.