experimenter
ik spe ruh men ter
- n a research worker who conducts experiments
 - n  a person who enjoys testing innovative ideas
                    
                        
                            
she was an experimenter in new forms of poetry 
- Both dogs in each pair were given commands to place their paws in the experimenter's hands, and when they obeyed, they were given a reward a piece of bread or sausage.
 - The other experimenter didn't imitate the animal.
 - SM walked until her nose was virtually touching the experimenter's, all the while saying she felt perfectly at ease.