cryophilic

capable of living at low temperatures

 Crystalline

of the nature of crystals

Cryoscopy

the science dealing with the determination of the freezing points of liquids

Crystallize

cause to form crystals

Cryogenics

the science that deals with the prodution of extremely low temperatures

Cryotherapy

theraputic use of cold

Dactylology

the science of communicating by using hand signs; sign language

Zygodactyl

having the toes arranged two in front and two behind

Dactylogram

a fingerprint

Dactylioglyph

the inscription of the engraver's name on a finger ring or gem

Pterodactyl

winged-fingered, prehistoric flying animal

Dactyloscopy

examination of fingerprints for purposes of indentification