correctly; exactly and without any mistakes
The student responded to the teacher's questions clearly and accurately.
concept
an idea or theory
Einstein’s theories are full of concepts most people find hard to understand.
convention
a way in which something is usually done, especially within a particular area or activity
In the US, a popular convention is to shake hands when you meet someone.
device
a tool or implement
The hospital bought a new device for measuring blood sugar.
liquid
something that is in a state of being neither a solid nor a gas; a free flowing substance
He poured the dark brown liquid down the sink.
measure
find size or quantity of something
Eratosthenes, the Greek librarian in Alexandria, was able to measure the circumference of Earth using simple geometry
professor
a teacher who teaches at a college or university
He is a very nice biology professor.
reserve
something saved for later use
He reserved a table at the busy restaurant.
theory
an idea or a statement that is believed to be true but needs to be proven
Some hypotheses become theories after they are tested many times.
university
an institution of higher learning where students work toward academic degrees and where research is conducted
After high school, she’s going to university.
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