lapid-, lapis-

(Latin: stone, rock)

lapidification (s) (noun), lapidifications (pl)
1. A process or method of harming or causing others to be harmed or killed by throwing stones at them: One method that people have used for executing other people in the past for criminal acts is lapidification.
2. Petrification or fossilization: The lapidification of plants or animals from earlier times means that they have been changed into stone, which indicates that water containing mineral particles have infiltrated into the mass and the shape of the vegetation or creature didn't change.
lapidify (luh PID duh figh") (verb), lapidifies; lapidified; lapidifying
To change or to turn organic matter into stone: The wood, which was cut into sections, seemed to lapidify, or petrify, becoming quite hard after a long time.
lapilliform (LAHP uh li form") (s) (noun), lapilliforms (pl)
Something that is shaped like a pebble or a very small stone: The necklace Nicole was wearing seemed to be made of lapilliforms, because the round objects were not little jewels or precious stones.
lapillus (LAP uh luhs) (s) (noun), lapilli (pl)
A small stony particle that has been ejected from a volcano: The glassy fragments, or lapilli, that were found near the house, originated from an eruption in the earth's crust, creating a fissure through which molten lava flowed out.
lapis (s) (noun), lapides (pl)
1. An abbreviated form of lapis lazuli, a precious stone having the color of deep blue, and used especially in making jewelry.

Lapis was Jane’s favorite stone which she had arranged to have put into her new necklace.

2. A rich blue color originating from an albuminous mineral: Since Greg had eyes between the shades of violet and green, he also had a silk tie with hues of lapis, turquoise, and aquamarine.
lapis lazuli (LAHP is LAHZ uh lee, LAP is LAZ oo lee) (s) (noun) (no plural)
1. A deep blue semi-precious stone which has been prized since antiquity for its opaque to translucent blue, violet-blue, or greenish-blue colors: A lapis lazuli has been described as a deep-blue mineral composed primarily of lazurite (a mineral with sulfate, sulfur, and chloride) which is used mainly as a gem or as a pigment (coloring powder).
2. Etymology: from Latin lapis. "stone" + lazuli, the genitive form of Medieval Latin lazulum; from Arabic lazaward, from Persian lajward, "blue stone".
Omnem movere lapidem. (Latin proverb)
1. "To move every stone."
2. "To leave no stone unturned."

By extension: "Keep trying to do your best when working on a project or an enterprise."

Stillicidi casus lapidem cavat. (Latin proverb)
Translation: "Dripping moisture hollows out a stone."

Also translated as: "Slow and steady does it."

Related "stone, rock" word families: litho-; petro-; saxi-; stele-.