Definition of marginicidal in US English:

marginicidal

adjective

Botany
rare
  • Designating dehiscence in which the septa break away from the united margins of the carpels.

Origin

Late 19th century; earliest use found in The New Sydenham Society's Lexicon of Medicine and the Allied Sciences. From margin + -icidal.

Pronunciation

marginicidal

/ˌmɑːdʒɪnɪˈsʌɪdl/