kreus- / Indo-European roots


To begin to freeze, form a crust.

1. Suffixed zero-grade form *krus-to-.
a. crouton, crust, crustacean, crustaceous, crustose; encrust from Latin crusta, crust;
b. crystal, crystalline, crystallo-; Kristallnacht from Greek krustallos, ice, crystal.
2. Suffixed zero-grade form *krus-es-. cryo- from Greek kruos, icy cold, frost.
3. Suffixed zero-grade form *krus-mo-. crymotherapy from Greek krūmos, icy cold, frost.

[Pokorny 1. B. kreu- 621.]

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