Dictionary.com
definitions

cloning vector

n.

An autonomously replicating plasmid having regions into which foreign DNA can be inserted.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
cloning vector in Culture

cloning vector

An agent used to transfer bits of DNA into the DNA of a cell in genetic engineering. Common types of vectors include the genetically engineered viruses that infect a cell.

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.