GMAT Strategy

Hello!
During my preparation for the exam I realized that my biggest problem is weak English vocabulary. It is not a big issue for the math section but this is real disaster for the verbal section (even for SC section with its short sentences).
So the question is how to gain the necessary vocabulary? Obvious choice is to read more (news/magazines etc) or even examples from RC section to catch the "right" words up but there are really plenty of specific terms (e.g. posterior vein of left ventricle). Usually I put down a list of new words what I found during a day and look it through at evening but I think it is not achievable to learn it by heart in short period of time.
Are there some other ways to boost the vocabulary? What kind tricks, methods can you advice?

"Word Power Made Easy" by Norman lewis may serve the purpose.