/ ˈkɒnsənənt; NAmE ˈkɑːn-/ noun , adjective
■ noun
1.
( phonetics ) a speech sound made by completely or partly stopping the flow of air being breathed out through the mouth
2.
a letter of the alphabet that represents a consonant sound, for example 'b', 'c', 'd', 'f', etc.
—compare vowel
■ adjective
consonant with sth ( formal ) agreeing with or being the same as sth else
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WORD ORIGIN
Middle English (in the sense letter representing a consonant ): via Old French from Latin consonare sound together, from con- with + sonare to sound (from sonus sound).