A-HORIZON Antonyms There are 2 antonyms of the word a-horizon. (opposite meanings)Did you mean?Definition of A-HORIZONSynonyms of A-HORIZONBest Opposite Words For A-HORIZONTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb Expand?WordSave?Synonyms..UsageTypeb-horizonnounnnoun • immediately below the A-horizon; contains deposits of organic matter leached from surface soilsc-horizonnounnnoun • beneath the B-horizon and above the bedrock; consisting of weathered rock Alternatives for B-HORIZON Words (1)subsoilOpposite words for b-horizon Alternatives for C-HORIZON Words (2)subsoilsubstratumOpposite words for c-horizon