bou·stro·phe·don 
(b′strə-fēdn, -fēdŏn′)
(b′strə-fēdn, -fēdŏn′)n.
An ancient method of writing in which the lines are inscribed alternately from right to left and from left to right.
[From Greek boustrophēdon, turning like an ox while plowing : bous, ox; see gwou- in the Appendix of Indo-European roots + strophē, a turning (from strephein, to turn; see streb(h)- in the Appendix of Indo-European roots).]
bou·stroph′e·donic (-strŏf′ĭ-dŏnĭk) adj.