Glossary of terms

Here you will find definitions of terms used in resources on the Foodsource website. You will also find these definitions on the right-hand side within chapters. If you have any suggestions for new glossary items, let us know here.

A (12) | B (4) | C (13) | D (3) | E (8) | F (7) | G (4) | H (2) | I (6) | L (5) | M (11) | N (3) | O (4) | P (5) | R (6) | S (9) | T (1) | U (1) | W (4) | Y (1) | Z (1)


The World Health Assembly is the forum through which the World Health Organisation is governed.


The World Health Organisation is a specialised branch of the United Nations. It is dedicated to improving public health worldwide.

Wildlife-friendly farming

while this is a fairly informal term, it generally refers to an approach to farming that aims to support both food production and the conservation of biodiversity on farmland. Wildlife-friendly farming is associated with the use of reduced chemical and fertiliser inputs and the preservation of native vegetation (e.g. flowers, trees, and bushes) on or around farmland. Those who use the term tend to equate wildlife-friendly farming with a land sharing approach. Related although not synonymous terms include organic farming and agroecology.

Yield gap

this is the difference between the actual productivity of a given area of farmland and the maximum productivity that could in principle be achieved using agricultural practices, resources and technologies that are currently available. The best yields that can be obtained locally depend on the capacity of farmers to access and use, among other things, land, seeds, water, nutrients, pest management, soils, biodiversity, and knowledge. Yield gaps are studied and measured at various scales - from the farm through to the national and global levels.

Zoonotic diseases

Zoonotic diseases are pathogens (e.g. viruses, bacteria, funghi, parasites) which can – to varying degrees – be transmitted between animals and human. Examples include bird and swine flu, lyme disease, bovine tuberculosis, rabies, and zika.