less-than sign
noun
The symbol <, typically used in mathematical contexts to denote that the quantity on the left of the sign is smaller than the quantity on the right of it.
- The signs < and > were invented by Thomas Harriot before 1621..
Origin
Early 20th century; earliest use found in The British Medical Journal.
- adenosine triphosphate
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- adenovirus
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- adenylylating
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