Lake turnover occurs when the layers of water with noted temperature differences begin to mix together and the water and debris that has been sitting at the bottom of the lake begins to mix with the layers of water above it.
Definition of cautious. : careful about avoiding danger or risk cautious investors cautious optimism.
Learner's definition of CAUTION. 1. [noncount] : care taken to avoid danger or risk : a careful attitude or way of behaving. You should use caution when operating the electric saw. He injected a note/word of caution in his talk. Her financial adviser urged caution before investing in the project.