different between superluminal vs supersonic

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- +? sonic

Pronunciation

• Rhymes: -?n?k

Adjective

supersonic (not comparable)

1. (of a speed) greater than the speed of sound (in the same medium, and at the same temperature and pressure)
2. (colloquial, of a sound) ultrasonic, having a frequency too high to be audible

Related terms

• (speed): plasmasonic, hypersonic, transonic, subsonic
• (sound): infrasonic, sonic

Translations

Noun

supersonic (plural supersonics)

1. An aircraft that can travel at the speed of sound.

See also

• superluminal

Anagrams

• coin purses, croupiness, percussion

Romanian

Etymology

From French supersonique

Adjective

supersonic m or n (feminine singular supersonic?, masculine plural supersonici, feminine and neuter plural supersonice)

1. supersonic

Declension