必需

Traditional form:

必需

Pinyin (reading):

bìxū

Definitions:

• to need
• to require
• essential
• indispensable

Characters:

• 必 - surely, certainly; must; will
• 需 - to need, to require; must

Traditional characters:

• 必 - surely, certainly; must; will
• 需 - to need, to require; must