1. fract- = to break
fracture (n.) a break or crack in a bone
Example: She was admitted to hospital with fractures of both legs.
refract (v.) to cause ( light ) to change direction when passing through at an angle
Example: Light is refracted when it passes through a prism.
infraction (n.) [ formal ] a situation in which someone breaks a law or rule
Example: an infraction of the rules
2. bio = life
biodegradable (adj.) biodegradable substances can be broken into very small parts by bacteria so that they are not harmful to the environment
biography (n.) a book that someone writes about someone else's life
symbiosis (n.) a close relationship between two different things or people from which both gets benefits
Example: a symbiotic relationship
3. syn = together ; with
syndrome (n.) a medical condition that has a particular set of effects on your body or mind
Example: patients with respiratory distress syndrome
synthesis (n.) ( plural syntheses ) a combination of different ideas or styles that forms a new idea or style
synchronize (v.) to make two or more things happen or move at the same time or speed
Example: The synchronized explosions brought chaos to the city centre.
synchronize sth with sth
Example: An editing unit is used to synchronize sound with images.