Definition of nucleotide
: any of several compounds that consist of a ribose or deoxyribose sugar joined to a purine or pyrimidine base and to a phosphate group and that are the basic structural units of nucleic acids (such as RNA and DNA) — compare nucleoside
Recent Examples of nucleotide from the Web
Geoff Burnstock (University College London) discovered purinergic signaling in 1972, and has been characterizing the nucleotide and nucleoside ligands, their receptors and their biology ever since.
Until the microarray, scientists trying to make sense of the letters would have had to pick through that heap a few nucleotides a time.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'nucleotide'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of nucleotide
International Scientific Vocabulary, irregular from nucle- + -ide
First Known Use: 1908
Learn More about nucleotide
Britannica.com: Encyclopedia article about nucleotide
Seen and Heard
What made you want to look up nucleotide? Please tell us where you read or heard it (including the quote, if possible).