1. Noun, used as a suffix

   not less than ...; ... and over; ... and above; ... and upwards; ... or more

   ６歳以上の子供は学校に通わなければならない。

2. beyond (e.g. one's expectations); above; more than; further than

3. Noun which may take the genitive case particle 'no', Noun

   the above; the above-mentioned; the aforementioned; the foregoing

4. Noun, Conjunction

   since ...; seeing that ...; now that ...; once ...

   after a verb

5. Expressions (phrases, clauses, etc.)

   that's all; that is the end; the end

Also written 已上【いじょう】ijou