Fusional morphology

Fusional morphology (also called inflectional morphology) is a term which is used for a morphological system in which one morpheme, usually an inflectional affix, expresses several different meanings or grammatical functions. The morphology of many Indo-European languages is fusional.

Example
The components '3rd person possessive' and 'plural' are fused together in the English word their, while Turkish uses two morphemes for these components: evleriden 'from their house' (Lit. 'house-PLURAL-POSSESSIVE-ABLATIVE').

Link
Utrecht Lexicon of Linguistics