以

yǐ

1. (used before direction words) beyond; than (as in 以上)
2. because of
3. with; by means of
4. in order to; so as to
5. as; in the capacity of (as in 以…身份)
6. (used in 以…为准) according to; taking as
7. (in 给…以…, formal) marks the thing given
8. (in 以…最…) marks the one that stands out (e.g. 其中以A最大 A is the largest of them)