Keystone - Meaning, Definition & English Examples
A keystone is the central, wedge-shaped stone at the top of an arch that locks the other stones in place. It is also used metaphorically to describe the most important part of a system or idea.
Definition:
Central stone at the summit of an arch, locking others in place; something essential holding parts together.
Synonyms:
cornerstone, linchpin, mainstay, anchor
Part of Speech:
noun
Antonyms:
nonessential, triviality, minor detail
Common Collocations:
keystone species, keystone habit, keystone project, keystone policy
Derivatives:
keystoned, keystoning
Usage Tips:
Use "keystone" metaphorically for vital elements in systems or literally in architecture to describe the central supporting stone.
Common Phrases:
keystone of the arch, keystone habit, keystone species
Etymology:
From Middle English "keyestone," combining "key" (central) + "stone," reflecting its pivotal role in structures.
Examples:
- 1. The mason carefully placed the keystone to complete the arch.
- 2. Trust is the keystone of any strong relationship.
- 3. The wolf is a keystone species in its ecosystem.
- 4. Her daily exercise routine became her keystone habit for health.