Put to death. Often used in combination: fresh-killed meat.
Of, relating to, or containing microorganisms or infectious agents that have been inactivated so as to be incapable of causing infection: a killed virus; killed vaccines.
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.