Cysticercoid is a word that refers to a larval stage in the life cycle of certain tapeworms. While it is a highly specific term, there are a few other synonyms that are sometimes used to describe this stage. One of these is the word "cysticercus", which is similar in meaning and can be used interchangeably. Another synonym that is sometimes used is "bladderworm", which refers to the cysticercoid stage where the larva develops into a bladder-like structure. Finally, some researchers may use the term "metacestode" to describe the cysticercoid stage, as it is a broad term that encompasses a variety of tapeworm larval forms.