consonant

n. letter (in the alphabet) that is not a vowel

Not to be confused with the musical concept of consonance. In articulatory phonetics, a consonant is a sound in spoken language that is characterized by a closure or stricture of the vocal tract sufficient to cause audible turbulence. The word consonant comes from Latin and means "sounding with" or "sounding together," the idea being that consonants don't sound on their own, but occur only with a nearby vowel, which is the case in Latin. This conception of consonants, however, does not reflect the modern linguistic understanding which defines consonants in terms of vocal tract constriction.
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Noun
1. a speech sound that is not a vowel
(antonym) vowel, vowel sound
(hypernym) phone, speech sound, sound
(hyponym) alveolar consonant, dental consonant, alveolar
2. a letter of the alphabet standing for a spoken consonant
(hypernym) letter, letter of the alphabet, alphabetic character
Adjective
1. involving or characterized by harmony
(synonym) harmonic, harmonical, harmonized, harmonised, in harmony
(similar) harmonious
2. in keeping; "salaries agreeable with current trends"; "plans conformable with your wishes"; "expressed views concordant with his background"
(synonym) accordant, agreeable, conformable, concordant
(similar) consistent

adj. consonant

n. consonant, letter (in the alphabet) that is not a vowel