The term "break cloud" refers to the act of a cloud dispersing or breaking apart. There are several synonyms for this term, including "dissipate," "disperse," "scatter," and "evaporate." These words can be used interchangeably to describe the process of a cloud breaking apart or becoming less dense. Other related terms include "clear," "thin out," and "vanish," which also describe the process of clouds dispersing or evaporating. In scientific terms, the process of cloud break up is referred to as cloud dissipation or cloud evaporation, which further emphasizes the concept of the cloud losing its density and becoming less noticeable or prominent in the sky.