| The American Heritage® Dictionary of the English Language: Fourth Edition. 2000. |
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| introgression |
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| SYLLABICATION: | in·tro·gres·sion |
| PRONUNCIATION: |   n tr -gr sh n |
| NOUN: | Infiltration of the genes of one species into the gene pool of another through repeated backcrossing of an interspecific hybrid with one of its parents. | | ETYMOLOGY: | From Latin intr gressus, past participle of intrgred , to step in : intr-, intro- + grad, to step; see ghredh- in Appendix I. | | OTHER FORMS: | intro·gressive (-grsv) —ADJECTIVE
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| The American Heritage® Dictionary of the English Language, Fourth Edition. Copyright © 2000 by Houghton Mifflin Company. Published by the Houghton Mifflin Company. All rights reserved. |
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