RARE, a. L. rarus, thin.
1. Uncommon not frequent as a rare event a rare phenomenon.
2. Unusually excellent valuable to a degree seldom found.
Rare work, all fill'd with terror and delight.
Above the rest I judge one beauty rare.
3. Thinly scattered.
4. Thin porous not dense as a rare and attenuate substance.
Water is nineteen times lighter and by consequence nineteen times rarer than gold.
5. Nearly raw imperfectly roasted or boiled as rare beef or mutton eggs roasted rare.
The King James Bible has stood its ground for nearly 400 years. However, during that time the English language has changed, and with it the meanings of some words it used. Here are more than 6,500 words whose definitions have changed since 1611.Wikipedia
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