Definition of monostichous in US English:

monostichous

adjective

  • 1Biology. Arranged in a single vertical row, rank, or series on one side of an axis, as the flowers of certain grasses. Compare earlier "distichous".

  • 2Of the teeth of certain amphibians: arranged in a single row.

Origin

Mid 19th century (in an earlier sense). From ancient Greek μονο- mono- + στίχος row, line + -ous; compare -stichous.