Definition of plantar in English:
 plantar
adjective ˈplantəˈplæn(t)ər
Anatomy Relating to the sole of the foot.
 the lateral plantar artery
 Example sentencesExamples
-  The peroneal in such cases provides the medial and lateral plantar arteries.
 -  Warts on the soles of the feet are called plantar warts.
 -  When landing from a jump, the body will remain upright while the foot attains a plantar flexed position due to activity in the triceps surae muscle.
 -  The pressure-sensitive foot switches were secured to the calcaneus and to the first ray on the plantar surface of the foot.
 -  It usually appears in the oral cavity, anogenital region, or plantar surface of the foot, but can arise anywhere on the skin surface.
 
Origin
  
Early 18th century: from Latin plantaris, from planta 'sole'.
   Definition of plantar in US English:
 plantar
adjectiveˈplan(t)ərˈplæn(t)ər
Anatomy Relating to the sole of the foot.
 the lateral plantar artery
 Example sentencesExamples
-  The peroneal in such cases provides the medial and lateral plantar arteries.
 -  It usually appears in the oral cavity, anogenital region, or plantar surface of the foot, but can arise anywhere on the skin surface.
 -  When landing from a jump, the body will remain upright while the foot attains a plantar flexed position due to activity in the triceps surae muscle.
 -  Warts on the soles of the feet are called plantar warts.
 -  The pressure-sensitive foot switches were secured to the calcaneus and to the first ray on the plantar surface of the foot.
 
Origin
  
Early 18th century: from Latin plantaris, from planta ‘sole’.