Engrosses

verb

1. To write (a document) in large, aesthetic, and legible lettering; to make a finalized copy of.
2. To buy up wholesale, especially to buy the whole supply of (a commodity etc.).
3. To monopolize; to concentrate (something) in the single possession of someone, especially unfairly.
4. To completely engage the attention of.

   "She seems to be completely engrossed in that book."

5. To thicken; to condense.