to recognize someone or something and say or prove who or what they are

a room used for scientific work

to study a subject in order to discover new information or reach a new understanding

someone who studies science or works in science

something that makes someone with an illness healthy again

extremely large

to stop something from happening or someone from doing something

to find out something or to find a place or an object, especially for the first timeto find out something or to find a place or an object, especially for the first time

a test, especially a scientific one, that you do in order to learn something or to discover whether something is true

to make water, air, soil, etc. dirty or harmful

to design or create something which has never existed before