Chemical Element in Limestone and Milk
This page is the CodyCross answer for the clue below from Tracking Time, Group 1046, Puzzle 3 (Christiaan Huygens).
Question is: Chemical Element in Limestone and Milk
and the answer is: CALCIUM
Word Meaning:
CALCIUM — The chemical element with atomic number 20: a soft, silvery-white alkaline earth metal which occurs naturally as carbonate in limestone and as silicate in many rocks.
Definitions from Wiktionary.