Presenting 9,000 terms that are used to describe all types of plants and plant problems, this time-saving reference eliminates the need for professional agriculturalists, scientists, and students to "puzzle out" the meaning of specialized plant science terms. Put together during the careers of two seasoned plant pathologists with a combined 85 years of experience, this glossary is the first to cover plant pathology-related terms from all plant science fields, including genetic engineering, molecular biology, agronomy, bacteriology, botany, floriculture, forestry, horticulture, mycology, nematology, and virology. The authors set down precise and accurate meanings for the widest possible range of words--from recently-coined terms to old phrases that are now obsolete. They include terms that are unique to plant pathology, terms from related areas of plant science, common words that have a special meaning for plant pathologists, terms that have changed in meaning over the years, and terms from other languages that are now commonly used by English-speaking plant pathologists. Having used earlier versions of this glossary in teaching college and graduate courses, the authors were able to refine or modify the definitions over an extended period. The result is a unique and valuable resource that will facilitate a common understanding of terms across the plant pathology spectrum, including plant pathologists for whom English is a second language.