hypersonic

As adjectives the difference between hypersonic and undefined

is that hypersonic is (of a speed|aviation) equal to, or greater than, or capable of achieving, five times the speed of sound while undefined is lacking a definition or value.

As a noun infrasound

is (physics) sound waves having frequency below the human audible range (below about 20 hz).

As an adjective hypersonic is

(of a speed|aviation) equal to, or greater than, or capable of achieving, five times the speed of sound.

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Wikidiffcom has no English definition.

As an adjective hypersonic is

equal to, or greater than, or capable of achieving, five times the speed of sound.

As adjectives the difference between hypersonic and hypertonic

is that hypersonic is equal to, or greater than, or capable of achieving, five times the speed of sound while hypertonic is having a greater osmotic pressure than another.

As adjectives the difference between hyperonic and hypersonic

is that hyperonic is of or pertaining to hyperons while hypersonic is (of a speed|aviation) equal to, or greater than, or capable of achieving, five times the speed of sound.

As a noun taxonomy

is the science or the technique used to make a classification.

As an adjective hypersonic is

(of a speed|aviation) equal to, or greater than, or capable of achieving, five times the speed of sound.

As an adjective hypersonic

is (of a speed|aviation) equal to, or greater than, or capable of achieving, five times the speed of sound.

As an adverb hypersonically is

in a hypersonic way.