aldonaĵo signifas en angla

additive [additives]▼(substance added to another substance to produce certain properties)
noun
[UK: ˈæ.də.tɪv] [US: ˈæ.də.tɪv]

addition [additions]▼(thing added)
noun
[UK: ə.ˈdɪʃ.n̩] [US: ə.ˈdɪʃ.n̩]