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Definition of subsonically

subsonically

/sʌbˈsɒnɪkli/
sub · son · i · cal · ly
Adjective:subsonic
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subsonically Lexical Profile

subsonically Game Scores & Validity

• adverb

1

At a speed slower than the speed of sound (less than Mach 1).

Example

"Commercial passenger airliners are designed to cruise subsonically to maximize fuel efficiency and cabin comfort."

2

By means of or at a sound frequency below the lower threshold of normal human hearing (typically below 20 hertz).

Example

"Large marine mammals and elephants can communicate subsonically across vast distances using low-frequency vibrations."

Synonyms
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Antonyms
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• Rhymes for subsonically

• Nearby Words

subskill
subsoil
subsonic
subsonically
subspecialist
subspecialize
subspecialty

Cite this Entry

Wordmom. (2026). Definition of Subsonically. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/subsonically
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