1. noun /ˈkɒn.sən.ənt,ˈkɑn.sən.ənt/
a) A sound that results from the passage of air through restrictions of the oral cavity; any sound that is not the dominant sound of a syllable, the dominant sound generally being a vowel.
b) A letter representing the sound of a consonant.
2. adjective /ˈkɒn.sən.ənt,ˈkɑn.sən.ənt/
Wikipedia foundation.