Fusional languages are languages where words are built with a few Affixes, each of which conveys several aspects of meaning.

Spanish, Latin

Spanish example: hablo /ablo/(I speak), habla/abla/(s/he speaks), hablé//a'ble/(I spoke). where habl-: (speak), -o: first-person singular present, -a: third-person singular present, : first-person singular past