What is the definition of summer and winter?

Summer: the warmest season of the year, in the northern hemisphere from June to August and in the southern hemisphere from December to February.

Winter:

the coldest season of the year, in the northern hemisphere from December to February and in the southern hemisphere from June to August.

The definition for summer is

" the warmest season of the year, in the northern hemisphere from June to August and in the southern hemisphere from December to February."

the definition for winter is

"the coldest season of the year, in the northern hemisphere from December to February and in the southern hemisphere from June to

August."

credits to google