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Stem

MORPHOLOGY: a term which is commonly used for the uninflected part of a word. EXAMPLE: if we take the plural form disagreements, the form disagreement is called the stem. In languages such as Ancient Greek, in which words belong to different declensional or conjugational classes (marked by a theme or extension), the stem includes these extensions. For example, Ancient Greek declension I nouns are formed by adding the vowel a to the root géphur+a- 'bridge', while declension II nouns are formed by adding the vowel o to the root hípp+o- 'horse'. The inflectional endings for case and number are added to these forms. Traditionally, the forms géphura- and hippo- are called stems, while géphur- and hipp- are called roots.