Deciduous
Definition
The term used to describe certain trees or shrubs that shed leaves annually or periodically. (not evergreen)
Source
"Glossary", FOREST RESTORATION RESEARCH UNIT, 2008. "Research for Restoring Tropical Forest Ecosystems: A Practical Guide". Biology Department, Science Faculty, Chiang Mai University, Thailand. http://www.forru.org/PDF_Files/rfrtfpdf/rfrtfappendix.pdf
Alternative definition
The phenology of perennial plants which are leafless for a certain perod during the year. The leaf shedding usually takes place simultaneously in connection with the unfavourable season.
Alternative source
Terminology for integrated resource planning and management, FAO, 1999 (X2079E)