different between eccentricity vs levity

English

Etymology

eccentric +? -ity

Pronunciation

• (US) IPA^(key): /??k.s?n?t??s.?.ti/, [??k.s?n?t??s.?.?i]

Noun

eccentricity (countable and uncountable, plural eccentricities)

1. The quality of being eccentric or odd; any eccentric behaviour.
2. (mathematics) The ratio, constant for any particular conic section, of the distance of a point from the focus to its distance from the directrix.

3. (astronomy) The eccentricity of the conic section (usually an ellipse) defined by the orbit of a given object around a reference object (such as that of a planet around the sun).

Translations

English

Etymology

Coined in 1564, from Latin levit?s (“lightness, frivolity”), from levis (“lightness (in weight)”). Cognate to lever, and more distantly, light.

Pronunciation

• (UK, US) IPA^(key): /?l?.v?.ti/

Noun

levity (usually uncountable, plural levities)

1. Lightness of manner or speech, frivolity; lack of appropriate seriousness; inclination to make a joke of serious matters.
2. (obsolete) Lack of steadiness.
3. The state or quality of being light, buoyancy.

   • Most of the confidences were unsought - frequently I have feigned sleep, preoccupation or a hostile levity […]

   • 1838, Robert Montgomery Bird, Peter Pilgrim

     […] it would really seem as if there was something nomadic in our natures, a principle of levity and restlessness […]

   • 1869, Mary Somerville, On Molecular and Microscopic Science 1.1.12:

     Hydrogen […] rises in the air on account of its levity.

4. (countable) A lighthearted or frivolous act.

Antonyms

• gravity

Derived terms

• levitous

Translations

References