整个 is a Chinese adjective that means "entire" or "whole." In Engpsh, we would say "whole" or "entire" instead. Here are some examples:
我们需要看整个图片，才能搞清楚这个景观是什么。 (In Engpsh: We need to see the whole picture in order to understand what the landscape is.)
我们的团队里有一些人不认同这个决定，但我们需要支持整个团队的决定。 (In Engpsh: Some people in our team don't agree with the decision, but we need to support the whole team's decision.)
The word "整个" comes from the Chinese language. It is composed of the characters 整 (zhěng) and 个 (gè), which respectively mean "whole" or "complete" and "item" or "individual thing." Together, these characters form the adjective "整个" which describes an entity that is whole or complete.