Step 1: Recall mercury's special property.
Mercury is the one metal that stays liquid at ordinary room temperature, and it readily dissolves many other metals into itself.
Step 2: Name what such a mixture is called.
Whenever mercury is alloyed with another metal, whether it forms a liquid or a soft solid mixture, the resulting alloy has its own special name, amalgam, rather than being called a generic alloy.
Step 3: Rule out the other terms.
Galvanization refers to coating iron with zinc, not an alloy at all. Bronze is specifically a copper-tin alloy, no mercury involved. Microlam is a laminated wood product, unrelated to metallurgy entirely.
Step 4: Conclude.
An alloy containing mercury is called an amalgam. \[ \boxed{\text{Amalgam}} \]