kreus-

To begin to freeze, form a crust.

1. Suffixed zero-grade form *krus-to-.

a. crouton, crust, crustacean, crustaceous, crustose; encrust, Kristallnacht, from Latin crūsta, crust (with obscure lengthening);

b. crystal, crystalline, crystallo-, 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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