Examlex
The exact meaning for words is always reflected in the definition in the dictionary.
Picometers
A unit of length in the metric system equal to one trillionth of a meter, often used to measure atomic and molecular sizes.
Micrometers
Units of measurement equal to one-millionth of a meter, commonly used in science to measure microorganisms or cellular structures.
Capsid
Protein coat surrounding the nucleic acid of a virus.
Envelope
A flat, usually rectangular or square paper container used for sending letters or documents, or the outer covering of a structure.
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