noun. a compound of alumina and a metallic oxide.
1. Noun, singular or mass Check the instructions on the Portland cement or calcium aluminate to see how much water you should add to the mix. 2. Verb, non-3rd person singular present Add 3 parts calcium aluminate cement to the sand and mix it thoroughly, using the garden hoe. 3. Adjective Powders made with earth aluminate tend to light much better, and the light lasts much longer than those with a zinc base.