different between collision vs ultraperipheral

English

Etymology

From Middle French collision, from Late Latin collisio, from Latin collidere, past participle collisus (“to dash together”); see collide.

Pronunciation

• IPA^(key): /k??l???n/
• Rhymes: -???n

Noun

collision (countable and uncountable, plural collisions)

1. An instance of colliding.
   • 1994, Stephen Fry, The Hippopotamus Chapter 2

     At the very moment he cried out, David realised that what he had run into was only the Christmas tree. Disgusted with himself at such cowardice, he spat a needle from his mouth, stepped back from the tree and listened. There were no sounds of any movement upstairs: no shouts, no sleepy grumbles, only a gentle tinkle from the decorations as the tree had recovered from the collision.

2. (physics) Any event in which two or more bodies exert forces on each other in a relatively short time. In a collision, physical contact of two bodies is not necessary.
3. (software compilation) Clipping of naming collision.

Hyponyms

Coordinate terms

• allision

Derived terms

Related terms

• collide

Translations

Further reading

• collision in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.
• collision in The Century Dictionary, New York, N.Y.: The Century Co., 1911.

French

Etymology

From Latin coll?si?.

Pronunciation

• IPA^(key): /k?.li.zj??/

Noun

collision f (plural collisions)

1. collision (an instance of colliding)

Derived terms

• collision frontale

Further reading

• “collision” in Trésor de la langue française informatisé (The Digitized Treasury of the French Language).

English

Alternative forms

• ultra-peripheral

Etymology

ultra- +? peripheral

Adjective

ultraperipheral (comparative more ultraperipheral, superlative most ultraperipheral)

1. On the extreme periphery
2. (physics) Describing particle collisions in which no hadronic interactions occur because of the large spatial separation between the projectile and target