triatomic /trī-ə-tomˈik/

1. Consisting of three atoms
2. Having three replaceable atoms or groups
3. Trivalent

• optimally
• optimate
• optimates
• optime
• optimes
• optimisation
• optimisations
• optimise
• optimised
• optimiser
• optimisers
• optimises
• optimising
• optimism
• optimisms
• optimist
• optimistic
• optimistically
• optimists
• optimization
• optimizations
• optimize
• optimized
• optimizer
• optimizers