+ +
Catalyst

Acetone reacts with hydrogen cyanide under base catalysed (hydroxide, carbonate, basic ion-exchange resin) conditions.

Alan Heaton (Ed.) An Introduction to Industrial Chemistry, Blackie (1996)

Reaction defined as:
Addition
Addition: Electrophilic Protonation
British A-Level Chemistry: A2
British A-Level Chemistry: AS
Industrial Process: Organic