spirant
Concise Oxford English Dictionary © 2008 Oxford University Press:
spirant /ˈspʌɪr(ə)nt/ Phonetics
▶adjective (of a consonant) uttered with a continuous expulsion of breath. ▶noun a spirant consonant; a fricative.
– derivatives
spirantization (or spirantisation) noun.
spirantization (or spirantisation) noun.
– origin C19: from L. spirant-, spirare ‘breathe’.
'spirant' also found in these Oxford entries:

