ba'urvlasle lujvo

s1=b2 is a phoneme/most basic phonological subunit of word, meaning/causing v2 in language v3.

See also phone (=ba'usle) and morpheme (=genvlasle).

In notes:

ba'urslefrica
x1 (sound) is phonemically distinguished from x2 (sound) in language x3
genvlasle
s1=g1 is a morpheme/most basic grammatical subunit of word, meaning/causing v2 in language v3=g2 for language/text g3.