Meaning of semiyearly

sem•i•year•ly

Pronunciation: (sem"ē-yēr'lē, sem"ī-), [key]
— adj.
  1. semiannual (def. 1).
—adv.
  1. twice a year; semiannually: He seeded the lawn semiyearly.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.