Oligo

Part of speech: noun, adjective

Definitions

1. A term used in biology to refer to a small number of entities or units, especially in contrast to a larger group or set
2. It can denote a limited quantity of certain molecular components, especially in genetic and biochemical contexts
3. The prefix indicating few or scanty, commonly utilized in scientific terminology to describe short sequences or small populations

Etymology: "Oligo" is a clipping of "oligonucleotide," a term for a short chain of nucleotides, the building blocks of DNA and RNA. The first half of that longer word comes from Greek "oligos," meaning "few" or "small," which is also the root of "oligarchy," rule by a small group. The second half, "nucleotide," combines "nucleus" with the chemical suffix "-ide," reflecting the compound's origin in the nucleic acids first isolated from cell nuclei. Biologists shortened the full term because "oligonucleotide" is cumbersome to repeat in lab work and papers. Once clipped, "oligo" also took on a life of its own, so that a researcher might order a custom "oligo" from a supplier without ever writing out the longer form. The clipped form thus names the same small-chain idea while carrying the original Greek notion of smallness in its opening syllables.

Synonyms: oligomer, oligosaccharide