Calciferous/kælˈsɪfərəs/ Definition 1 of 1Pro Tip 1/3Soil Nutrition Refers to nutrients provided to plants through earth containing calcium compounds. Farmers often test for calciferous levels to ensure optimal growth. Pro Tip 2/3Geological Context Used in geology to describe rocks or sediments rich in calcium. The cliffs are composed mainly of calciferous rock. Pro Tip 3/3Technical Usage Common in scientific fields, not used in everyday conversation. The biologist noted the calciferous structure within the sample.