Glossary

Achaemenid architecture

An architecture developed under the Achaemenid rulers of Persia (6th to 4th cent. B.C.) by a synthesis and eclectic adaptation of architectural

Glossary

acetylene torch

A torch, used in welding and in metal cutting, which is operated by compressed acetylene gas and oxygen.

Glossary

acetylene

A colorless gas, when mixed with oxygen, burns at a temperature of about 3500°C; used in welding.

Glossary

acetone

A highly flammable solvent which evaporates rapidly; used in lacquers, paint removers, thinners, etc.

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