Wiktionary
                    form class
                    
                        
                
                                                                    n. (context taxonomy English) A collection of organisms that is given formal recognition at the rank of class with a taxonomic name, but which is known to be an artificial group rather than a natural one.
WordNet
                    form class
                    
                        
                
                                                                    n. one of the traditional categories of words intended to reflect their functions in a grammatical context [syn: part of speech, word class]
Wikipedia
                    Form class
                    
                        
                
                                                                    Form class may refer to:
- Form classification, in paleontology
 - Homeroom, in schools
 - Part of speech, in grammar