What does calcic mean?
Calcic is an adjective meaning relating to, containing, or derived from calcium. It is chiefly a scientific word, appearing in geology, soil science, chemistry, and mineralogy, where precision about mineral composition matters. Geologists use it to describe rocks and minerals rich in calcium compounds — for example, calcic plagioclase is a calcium-rich variety of feldspar — while soil scientists apply it to layers known as calcic horizons, where calcium carbonates have accumulated through evaporation in dry climates. The word derives from the Latin calx, meaning limestone or quicklime, the same root that gave English the words calcium, chalk, and calculus. Because it is technical in register, calcic rarely appears in general conversation; instead, it signals specialist knowledge when it does occur. Its close relative, calcareous, refers specifically to calcium carbonate, making the distinction between the two terms important in rigorous geological description.
adjectiveOf, relating to, containing, or derived from calcium; especially denoting rocks or minerals composed largely of calcium compounds such as calcium carbonate or calcium silicate.
- Relating to, containing, or characteristic of calcium (used especially in chemistry, petrology, and soil science).
"The calcic rocks of the intrusion were rich in plagioclase feldspar."
"Soil scientists classified the layer as a calcic horizon because of its accumulation of calcium carbonates."
"The geologist noted that the more calcic plagioclase crystals had formed at higher temperatures deep within the magma."
From chalk to your bones: 'calcic' traces back to Latin calx, meaning lime — the same root that gave us both 'chalk' and the word 'calculate,' from counting with pebbles.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of calcic
The word calcic comes from the Latin calx (genitive calcis), meaning limestone, chalk, or quicklime. This same root gave rise to calcium, named by Humphry Davy after his isolation of the element in the early nineteenth century, and ultimately underlies words such as calculus and chalk. Calcic emerged as an adjective in scientific English during the eighteenth and nineteenth centuries as chemists and geologists needed precise terminology for calcium-bearing substances.
Related word forms
How calcic is actually used
Calcic is primarily a technical term used in geology, pedology (soil science), chemistry, and mineralogy rather than everyday speech. In petrology it often appears in the classification of igneous rocks (e.g., calc-alkaline series) and in describing plagioclase feldspar composition. In soil taxonomy, 'calcic' is an established diagnostic term for horizons enriched with secondary calcium carbonates. It is formal in register and carries no figurative or idiomatic usage.
Easily confused with calcic
Calcareous specifically means containing calcium carbonate (as in chalk or limestone), while calcic is the broader term for anything relating to or containing calcium, including other calcium minerals and compounds.
Calcified describes tissue or material that has become hardened by calcium deposits over time, whereas calcic simply describes a chemical relationship to calcium.