Origin of infective

First recorded in 1350–1400; Middle English word from Medieval Latin word infectīvus. See infect, -ive
Related formsin·fec·tive·ness, in·fec·tiv·i·ty, nounun·in·fec·tive, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for infective

Historical Examples of infective

British Dictionary definitions for infective



capable of causing infection
a less common word for infectious
Derived Formsinfectively, adverbinfectiveness or infectivity, noun
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 infective

late 14c., from Latin infectivus, from infectus (see infect).

Online Etymology Dictionary, © 2010 Douglas Harper

infective in Medicine




Capable of producing infection; infectious.
Related formsin•fective•ness null n.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.