Correct spelling for the English word "calcoid" is [kˈalkɔ͡ɪd], [kˈalkɔɪd], [k_ˈa_l_k_ɔɪ_d] (IPA phonetic alphabet).
Calcoid is an adjective that is used to describe something as resembling or being composed of calcite or calcareous material. Calcite is a mineral primarily made up of calcium carbonate (CaCO3) and is a major constituent of sedimentary rock such as limestone. Therefore, a calcoid substance may be formed by or consist of calcite or a similar calcareous substance.
In geology, calcoid can refer to the appearance or composition of certain rocks, sediments, or mineral deposits. Calcoid rocks typically exhibit a whitish or light-colored appearance due to their high calcite content. These rocks have often undergone diagenesis, a process of chemical and physical change, resulting in the precipitation and accumulation of calcium carbonate.
The term calcoid is also used to describe the composition of shells, coral, or other calcareous exoskeletons found in marine organisms. These structures are formed through biological processes, where calcium carbonate is secreted and deposited by the organism.
In a broader sense, calcoid can be used to describe artificial or man-made materials that imitate or contain calcite or calcareous components. For instance, calcoid ceramics or construction materials may incorporate calcite or calcium carbonate in their composition, providing enhanced strength, durability, or other desired characteristics.
Overall, the term calcoid is primarily used in the fields of geology, mineralogy, and materials science, indicating a close association with calcite or calcareous materials either in natural or man-made substances.
A neoplasm of the tooth-pulp.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.