verb (used with object), sub·di·vid·ed, sub·di·vid·ing.
to divide (that which has already been divided) into smaller parts; divide again after a first division.
to divide into parts.
to divide (a plot, tract of land, etc.) into building lots.
verb (used without object), sub·di·vid·ed, sub·di·vid·ing.
to become separated into divisions.
Origin of subdivide
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
to divide (something) resulting from an earlier division
(tr) US and Canadian to divide (land) into lots for sale
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Online Etymology Dictionary, © 2010 Douglas Harper