different between gravity vs superelevation

English

Etymology

16th century, learned borrowing from Latin gravit?s (“weight”) (compare French gravité), from gravis (“heavy”). Doublet of gravitas.

Pronunciation

• IPA^(key): /???æv?ti/
• Hyphenation: grav?i?ty

Noun

gravity (countable and uncountable, plural gravities)

1. The state or condition of having weight; weight; heaviness.
2. The state or condition of being grave; seriousness.

3. (music) The lowness of a note.
4. (physics) Force on Earth's surface, of the attraction by the Earth's masses, and the centrifugal pseudo-force caused by the Earth's rotation, resulting from gravitation.
5. (in casual discussion, also) Gravitation, universal force exercised by two bodies onto each other (gravity and gravitation are often used interchangeably).
6. (physics) Specific gravity.

Synonyms

• weightfulness
• The state or condition of being grave: graveness, seriousness

Derived terms

• anti-gravity
• centre of gravity
• gravitation
• graviton
• gravity-assist
• gravity drag
• gravity turn
• gravity wave
• microgravity
• quantum gravity
• zero gravity

Translations

References

• John A. Simpson and Edward S. C. Weiner, editors (1989) , “gravity”, in The Oxford English Dictionary, 2nd edition, Oxford: Clarendon Press, ?ISBN

• Gravitation in the Encyclopædia Britannica (11th edition, 1911)

English

Etymology

super- +? elevation

Noun

superelevation (plural superelevations)

1. The angle that a gun must be elevated above the line of its target to allow for the effect of gravity on the projectile.
2. The cant of a railway track; the difference in elevation (height) between its two edges, as on a curve.