DAILY VOCABULARY WITH PICTURES. Abstract

• abstract [countable]
• 1 a painting, design etc which contains shapes or images that do not look like real things or people
• 2 a short written statement containing only the most important ideas in a speech, article etc
• 3

  in the abstract

   considered in a general way rather than being based on specific details and examples:
• Talking about crime in the abstract just isn't enough.

Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.