- to prepare (a house, car, etc.) so as to counteract the hot weather of summer: to summerize a house by adding air conditioning.
- to protect in hot weather for future use: to summerize a snowmobile.
Also especially British, sum·mer·ise.
Origin of summerize
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Word Origin and History for summerising
Online Etymology Dictionary, © 2010 Douglas Harper