Chapter 12Inventions

Vocabulary

innovation

noun

a new way of doing something

telegraph

noun

a device that uses electrical signals to send messages over wires

broadcast

noun

a program sent from a radio or television station

irrigation

noun

the use of ditches, pipes, or canals to bring water to dry land to help crops grow

biotechnology

noun

a science that uses living things (plant or animal cells or bacteria) to make products such as medicine or food

hybrid vehicle

noun

a car or truck that runs on both gasoline and electricity

rille

noun

a valley on the moon

trench

noun

the deepest part in the ocean floor

genius

noun

a person with exceptional intellectual ability or creativity

codex

noun

an ancient picture book often made of tree bark or animal hide

peculiar

adjective or adverb

unusual; strange, or odd