1. Lasting through a year
   "attending yearlong courses"

See also: long

• Ipomoea tricolor
• IPR
• ipratropium bromide
• iproclozide
• ipse dixit
• ipsedixitism
• ipsilateral
• ipso facto
• Ipsus
• IPV
• IQ
• IQ test
• ir-
• ira
• Ira Gershwin
• iracund
• irade
• Irak
• Iraki
• Iran
• Iran-Iraq War
• Irani
• Iranian
• Iranian capital
• Iranian dinar