a of an approach to a problem that begins with details and works up to the highest conceptual level
bottom-up parser a bottom-up model of the reading process
Obama's bottom-up philosophy also helps explain why he was able to sweep the organization-heavy caucus states, which were so crucial to building up his insurmountable lead in .
For history teaches us that real progress -- whether it's economic or social or political -- doesn't come from the top-down, it typically comes from the bottom-up.
That's how we've always grown the American economy from the bottom-up.