Where does “dead ice” come from?

dead ice (English) comes from English dead, from English -en, from Middle English -en, from Old English -en, from Old Norse -inn, from Proto-Norse -īna-, from Proto-Germanic -īnaz, from Proto-Indo-European -iHnos — adjectival suffix.

dead ice (English): Former glacier ice that is no longer connected to...

Definitions

  1. Former glacier ice that is no longer connected to...

Ancestry of “dead ice”, step by step

dead ice traces back through two separate lines of ancestry.

via English dead

StepLanguageWordMeaning
1EnglishdeadNo longer living; Devoid of life; Figuratively,...
2English-enDenotes the past participle form when attached to...
3Middle English-enDenotes the past participle form when attached to...
4Old English-enmæġþ + API → mæġden; cocc + API → cycen, cicen;...
5Old Norse-innUsed to create adjectives from nouns, meaning...
6Proto-Norse-īna-
7Proto-Germanic-īnaz-en
8Proto-Indo-European-iHnosCreates adjectives of materials
9Proto-Indo-European-no-adjectival suffix

via English ice

StepLanguageWordMeaning
1EnglishiceWater in frozen form; Any frozen volatile...
2Middle Englishisice; That which is short-lived like ice; icy...
3Old Englishīsice
4Proto-West Germanicīsice
5Proto-Germanicīsąice
6Proto-Indo-Europeanh₁eyH-ice, frost
Every word from Proto-Indo-European -no-Every word from Middle English -enEvery word from English -en
dead ice — Etymology, Origin & Word History | Etymology Explorer