hydrofluoric acid

hy·dro·flu·or·ic acid

noun \-ˌflr-ik-, -ˌflōr-, -ˌflr-\


: an aqueous solution of hydrogen fluoride HF that is a weak poisonous acid, that resembles hydrochloric acid chemically but attacks silica and silicates, and that is used especially in finishing and etching glass

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