ac·cel·er·a·tion 
(ăk-sĕl′ə-rāshən)
(ăk-sĕl′ə-rāshən)n.
1.
a. The act of accelerating.
b. The process of being accelerated.
2. Abbr. a Physics The rate of change of velocity with respect to time.
- orthopedic
- orthopedically
- orthopedics
- orthopedist
- orthopsychiatric
- orthopsychiatrical
- orthopsychiatrist
- orthopsychiatry
- orthopteran
- orthopterous
- orthopyroxene
- orthorhombic
- orthoscopic
- orthostatic
- orthotic
- orthotics
- orthotist
- orthotropic
- orthotropically
- orthotropism
- orthotropous
- Ortler
- Ortles
- ortolan
- Orton