different between superluminal vs superbradyon

English

Etymology

super- +? luminal

Adjective

superluminal (comparative more superluminal, superlative most superluminal)

1. (astronomy, physics, fiction, fantasy) Faster than light; having a speed greater than light.
   • 1984, Edward Edelson, "Faster than light?," Popular Science, p. 70 (retrieved 20 Nov 2013):

     The first thing to understand about superluminal expansion is that it isn't visible to the unaided eye. The objects that appear to be moving faster than light are emitting radio waves, not visible light.

Synonyms

• FTL, superlumic, hyperlight
• supercausal (faster than the speed of causality)

Antonyms

• STL, subluminal, sublumic, sublight

Derived terms

Related terms

• luminal
• subluminal

Translations

See also

• superluminous
• supersonic

Further reading

• faster-than-light on Wikipedia.Wikipedia

English

Etymology

super- +? bradyon

Noun

superbradyon (plural superbradyons)

1. (physics) a particle with positive mass and positive energy and a superluminal critical speed in vacuum, possibly an ultimate constituent of matter similar to preons.

Related terms

• preon
• bradyon

See also

• tardyon
• tachyon