Compound
Definition:
A compound is a word containing a stem that is made up of more than one root.
Examples:
(English)
Blackboard contains a stem that refers to "a large, smooth, usually dark surface on which to write or draw with chalk". However, the stem is made up of two roots, black and board.
Source:
This page is an extract from the LinguaLinks Library. Version 5.0 published on CD-ROM by SIL International, 2003.