AO1Knowledge & Comprehension
IB Command Term: Define
What does "Define" mean in IB exams? Learn how to write precise definitions that earn full marks quickly.
IB Definition
"Give the precise meaning of a word, phrase, concept or physical quantity."
Marks: 1 markAssessment Objective: Objective 1
What You Need to Do
Write the exact meaning. No explanation or examples needed — just the definition.
How to Structure Your Answer
- 1State the precise meaning in one clear sentence
- 2Use subject-specific vocabulary where appropriate
- 3Do NOT add examples or explanations (wastes time)
Example Exam Questions
- “Define the term "biodiversity".”
- “Define "sustainability".”
- “Define the term "market share".”
- “Define "opportunity cost".”
Common Mistakes
- ✗Writing too much — definitions should be 1–2 sentences max
- ✗Using the word itself in the definition (circular)
- ✗Adding examples when not asked for
- ✗Being vague instead of precise
Examiner Tip
Keep it concise — just state the meaning. No examples or elaboration needed.
Where This Term Appears
ESSHighBusiness ManagementHighEconomicsHigh