IPA: //mɪdˈwɪntər//
KK: /mɪdˈwɪntər/
The time in the middle of winter, often around December 22, when the days are shortest and the weather is coldest.
Many cultures celebrate festivals during midwinter to mark the return of longer days.
Midwinter → It is formed from "mid-" (meaning middle) and "winter" (from Old English "winter", meaning the cold season). The word "midwinter" refers to the middle of the winter season, typically around the winter solstice.
Think of the 'middle' ('mid-') of the 'cold season' ('winter') — that's why midwinter refers to the halfway point of winter.