Reference meaning

U

noun·Reference

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a base containing nitrogen that is found in RNA (but not in DNA) and derived from pyrimidine; pairs with adenine

Related source terms

Other meanings

2. noun

a heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons

3. noun

the 21st letter of the Roman alphabet

4. adjective

(chiefly British) of or appropriate to the upper classes especially in language use

Source and scope

This definition is reproduced from Princeton WordNet 3.0, sense 15084357-n, under the WordNet 3.0 License. It has not yet received VocabularyBase editorial review. Read the source and license details.