Examlex
A molecule is a group of atoms that are chemically bonded together.
Four
The number following three and preceding five, represented in numerals as 4.
Quadra-
A prefix meaning four or fourfold, used to describe quantities or units.
Within
Inside or not further than a certain area, time period, or range.
Endo-
A prefix meaning "inside," "within," or "internal."
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