precursor /prē-kûrˈsər/

1. Something that exists or goes in advance of another
2. An indication of the approach of an event
3. A forerunner, herald or harbinger
4. A predecessor
5. A substance from which the one in question is derived or manufactured (chem)

precurˈsive or precurˈsory adjective

• accede
• acceded
• accedence
• accedences
• acceder
• acceders
• accedes
• acceding
• accel
• accelerando
• accelerant
• accelerants
• accelerate
• accelerated
• accelerated aging test
• accelerated aging tests
• accelerated fatigue tests
• accelerates
• accelerating
• acceleration
• acceleration due to gravity
• acceleration principle
• accelerations
• accelerative
• accelerator