partition in WordNet English dictionary

1. a vertical structure that divides or separates (as a wall divides one room from another)
   partition  divider 
   
2. the act of dividing or partitioning; separation by the creation of a boundary that divides or keeps apart
   division  partition  partitioning  segmentation  sectionalization  sectionalisation 
   
3. (anatomy) a structure that separates areas in an organism
   partition 
   
4. (computer science) the part of a hard disk that is dedicated to a particular operating system or application and accessed as a single unit
   partition 
   

1. separate or apportion into sections
   "partition a room off"
   partition  zone 
   
2. divide into parts, pieces, or sections
   "The Arab peninsula was partitioned by the British"
   partition  partition off