Prefixes: UNI = ONE BI = TWO RE Vocabulary Unit 3 Uni & Bi Prefixes: UNI = ONE BI = TWO

NOUN When two or more things occur at one time unison NOUN When two or more things occur at one time

ADJECTIVE ONE OF A KIND; UNUSUAL OR RARE unique ADJECTIVE ONE OF A KIND; UNUSUAL OR RARE

NOUN A ONE-WHEELED VEHICLE ON WHICH THE RIDER SITS AND PEDALS unicycle NOUN A ONE-WHEELED VEHICLE ON WHICH THE RIDER SITS AND PEDALS

ADJECTIVE A LIVING CREATURE WITH ONLY ONE CELL unicellular ADJECTIVE A LIVING CREATURE WITH ONLY ONE CELL

ADJECTIVE HAPPENING ONCE EVERY TWO YEARS biennial ADJECTIVE HAPPENING ONCE EVERY TWO YEARS

ADJECTIVE ABLE TO SPEAK TWO DIFFERENT LANGUAGES FLUENTLY bilingual ADJECTIVE ABLE TO SPEAK TWO DIFFERENT LANGUAGES FLUENTLY

ADJECTIVE HAVING TWO DIFFERENT COLORS bicolor ADJECTIVE HAVING TWO DIFFERENT COLORS

NOUN AN AIRPLANE WITH TWO SETS OF WINGS biplane NOUN AN AIRPLANE WITH TWO SETS OF WINGS

ADJECTIVE HAPPENING EVERY TWO MONTHS bimonthly ADJECTIVE HAPPENING EVERY TWO MONTHS

NOUN A TWO – FOOTED CREATURE biped NOUN A TWO – FOOTED CREATURE