Dictionary Definitions

Formulated	to express in precise form; state definitely or systematically: He finds it extremely difficult to formulate his new theory. to devise or develop, as a method, system, etc. to reduce to or express in a formula.
important	of great significance or value. important habitats for wildlife
limestone	a hard sedimentary rock, composed mainly of calcium carbonate or dolomite, used as building material and in the making of cement.
trace	1. a surviving mark, sign, or evidence of the former existence, influence, or action of some agent or event; vestige: traces of an advanced civilization among the ruins. 2. a barely discernible indication or evidence of some quantity, quality, characteristic, expression, etc.: a trace of anger in his tone.
folic	Testing the definitions app