1. A vertical structure that divides or separates (as a wall divides one room from another)
   "A folding divider separated the living room from the dining area";
   - partition
    
2. A drafting instrument resembling a compass that is used for dividing lines into equal segments or for transferring measurements
   "The architect used a divider to ensure precise measurements in her blueprint"
    
3. A person who separates something into parts or groups
   "The divider sorted the recyclables into different categories"
    
4. A taxonomist who classifies organisms into many groups on the basis of relatively minor characteristics
   "The divider created numerous subgroups based on slight variations";
   - splitter

Derived forms: dividers

Type of: actor, construction, doer, drafting instrument, structure, systematist, taxonomer, taxonomist, worker

Antonym: lumper

Encyclopedia: Divider