: lacking or deficient in lime.

What does the word calcareous mean?

1 : resembling calcite or calcium carbonate especially in hardness. 2 : consisting of or containing calcium carbonate also : containing calcium.

What does calcareous soil mean?

The term calcareous can be applied to a sediment, sedimentary rock, or soil type which is formed from, or contains a high proportion of, calcium carbonate in the form of calcite or aragonite.