secondary root See lateral root Merriam-Webster Online Dictionarysecondary root (noun) one of the branches of a primary rootRelated Articles: Glossary: lateral root or branch« Back to Glossary Index ATP: Asia Tree Preservation2016-12-16T18:24:13+08:00 Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInTumblrPinterestVkEmail