Cryoseisms

Part of speech: noun

Definitions

1. A type of seismic activity resulting from the freezing and thawing of ground materials that generates vibrations in the earth's crust
2. Earthquakes specifically caused by the contraction and expansion of soil or ice due to temperature changes, leading to noticeable tremors
3. Seismic events occurring primarily in cold regions where substantial changes in temperature create stress in the ground, prompting the release of energy

Etymology: "Cryoseisms" is the plural of "cryoseism," a noun for ground vibrations produced when frozen soil and rock crack or shift during freezing and thawing. The singular is formed from two combining elements: "cryo-," from Greek "kryos," meaning "icy cold" or "frost," and "seism," from Greek "seismos," meaning "earthquake" or "shaking." Put together, the term literally describes a shaking caused by cold. The plural simply counts separate events of this kind, so a cold winter night in northern regions might produce several cryoseisms, each one a small tremor that travels through the earth's crust. The word belongs to the family of scientific coinages built from Greek roots, which makes it easy to decode once you know the parts.