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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Cryogenic refrigerant 6 letters:

ETHANE: Cryogenic refrigerant
NEON: Liquid ___ (cryogenic refrigerant)
NEON: It's used as a cryogenic refrigerant
NEON: Cryogenic refrigerant