past participle of freeze
"The lake was frozen solid after the harsh winter night."
turned into ice; affected by freezing or by long and severe cold
"the frozen North"
"frozen pipes"
"children skating on a frozen brook"
(used of foods) preserved by freezing sufficiently rapidly to retain flavor and nutritional value
"frozen foods"
Having undergone the process of freezing; in ice form.
"The lake has turned completely frozen after weeks of bitter cold weather."
In plain English: Frozen means turned into solid ice because of extreme cold.
"The lake was frozen solid after weeks of cold weather."
Usage: Use frozen to describe any substance that has turned into solid ice, such as water or food items like fruit and vegetables. Do not confuse this state with merely being very cold while remaining liquid.
The word "frozen" comes from the Middle English verb meaning "to freeze." It is the past participle form used to describe something that has become solid due to cold.