1. (noun) a state of critical urgency

• criticalness
• cruciality

1. (noun) a state of critical urgency

• urgency

2. (noun) a critical state; especially the point at which a nuclear reaction is self-sustaining

• critical point
• crossroads
• juncture

1. (noun) a critical state; especially the point at which a nuclear reaction is self-sustaining

• flash point
• flashpoint

1. (noun) a state of critical urgency

• all important
• all-important
• crucial
• essential
• of the essence
• critical
• critical
• critical
• decisive
• critical
• critical
• vital
• vital
• crucial
• important

2. (noun) a critical state; especially the point at which a nuclear reaction is self-sustaining

• critical