Over the past decade, the magnitude and variety of modelling work in the realm of veterinary services has shown a significant increase. Accordingly, the need for enhancement of communication and cooperation among modellers (those who develop models), users (those who run models), policy makers (those who use model outputs in decision making on control policy) and coordinators (those who connect modellers with policy makers) has also shown a notable increase. In this paper, terms used in epidemiological models are listed alphabetically and explained. It is expected that development of this lexicon will help to boost communication and collaboration among those concerned with modelling work and its utilization.