aluspõhi tähendus null.

bedrock▼◼◼◼[UK: ˈbed.rɒk] [US: ˈbed.rɑːk]

base▼◼◼◻[UK: beɪs] [US: ˈbeɪs]

basis [bases]▼◼◼◻noun
[UK: ˈbeɪ.sɪs] [US: ˈbeɪ.ˌsɪs]

rationale [rationales]▼◼◼◼noun
[UK: ˌræʃ.ə.ˈnɑːl] [US: ˌræʃ.ə.ˈnæl]