SPELLING bi- = two

bicolor  adjective  Having two different colors  The room was bicolor, having two different colors of red and green.

bicuspid  Noun  A two-pointed tooth located in the side of the jaw  Dentists sometime have to pull your bicuspids, two-pointed teeth located in the side of the jaw.

bicycle  noun  A vehicle with two wheels  I am going to ride my bicycle, a two-wheeled vehicle.

biennial  Adjective  Happening every two years  Some celebrations are biennial, occurring every other year.

bifocals  Noun  Eyeglasses with lenses that have two different sections – for seeing close up and far away  My grandma has bifocals for eyeglasses to see both close up and far away.

bilingual  adjective  Able to speak two different languages  He is bilingual, able to speak two different languages

bimonthly  adjective  Happening every two months  The magazines arrive in my mailbox bimonthly, every other month.

biped  Noun  A two-footed creature  The duck would be a biped, a two- footed creature.

biplane  Noun  An airplane with two pairs of wings  This biplane is a transportation vehicle with two pairs of wings.

biweekly  adjective  Happening every two weeks  Something that arrives in your mailbox 26 times a year is biweekly.