Definition of foliar in English:

foliar

adjective

technical
  • [attributive] Relating to leaves:

    ‘foliar colour and shape’
    • ‘Apart from the age, light availability may significantly modify foliar and plant allocation traits.’
    • ‘The highest rate of B foliar fertilization resulted in leaf burn but had no other evident detrimental effect on plant growth.’
    • ‘The bean leaf beetle, a foliar feeder, has been observed to most affect early planted beans.’
    • ‘These results indicate that stomatal uptake can be a major pathway for the foliar uptake of ionic solutes.’
    • ‘Dense foliage in irrigated winter wheat may favor development of different foliar and leaf spotting diseases.’

Origin

Late 19th century: from modern Latin foliaris, from Latin folium leaf.

Pronunciation:

foliar

/ˈfəʊlɪə/