1. Movement toward a chemical stimulus

Type of: chemotaxis

• obsessive
• obsessive-compulsive
• obsessive-compulsive disorder
• obsessive-compulsive personality
• obsessively
• obsessiveness
• obsessivity
• obsidian
• obsolesce
• obsolescence
• obsolescent
• obsolete
• obsoleteness
• obstacle
• obstacle course
• obstacle race
• obstetric
• obstetrical
• obstetrical delivery
• obstetrical toad
• obstetrician
• obstetrics
• obstinacy
• obstinance
• obstinate