Coagmentation is term used to describe the process of combining or uniting separate parts into a single entity. It is a rare word and there are very few synonyms to describe this act. However, there are some words that can be used to express similar meanings. One such word is amalgamation which means the act of merging or combining things into a single or unified whole. Another synonym for coagmentation is consolidation, which means to make something strong, stable or secure. Integration, union, cohesion are other synonyms that can be used to convey the same meaning as coagmentation. Ultimately, the choice of synonym depends on the context of the sentence and the desired tone of the writing.