sub·di·vide 
(sŭb′dĭ-vīd, sŭbdĭ-vīd′)
(sŭb′dĭ-vīd, sŭbdĭ-vīd′)v. sub·di·vid·ed, sub·di·vid·ing, sub·di·vides
v.tr.
1. To divide a part or parts of into smaller parts.
2. To divide into a number of parts, especially to divide (land) into lots.
v.intr.
To form into subdivisions.
sub′di·vider n.